When any book is turned into a film, it is inevitable that some things will be left out. While that's sad, it is necessary. But sometimes, even important things are left out. In my opinion, here are the ten biggest things left out of the Harry Potter films. Things you wouldn't really know about unless you read the books.

1. S.P.E.W

If you didn't read the books, then you have no idea what is is, or that this had it's own plotline for a few of the books. Harry Potter taught a lot of lessons through it's plots, and this one is no different. S.P.E.W. was created by Hermione and stands for "Society for the Promotion of Elfish Welfare". She began this because she saw just how badly house elves were treated at the 1994 Quidditch World Cup, and she wanted to make a change. The point Rowling had when writing this is to show the breaking down of prejudices and inhumane hierarchy for all creatures. Real world translation: Stop being so racist. Ron, a pure blood who grew up in the magical world, sees no problem with how house elves are treated. This then starts a lot of arguments between him and the muggle-born Hermione. This plot basically sets up the love/hate relationship that Ron and Hermione have, which leads to their epic make-out sesh (finally), and eventual marriage. S.P.E.W. is one thing that should have been present in the films, not only because it's fun to see Ron and Hemione argue, but simply because it teaches a very important lesson to kids.

2. Charlie Weasley

Okay, so in the books, Charlie is a great guy. And he works with dragons so that is pretty dang awesome. In the movies you meet the rest of the Weasley kids: Bill, Percy, Fred, George, Ron, and Ginny. But Charlie, the second oldest, is simply only mentioned. He makes a quick appearance in a family photo, but you don't even see him cause he's squished in the back. In the books, Charlie is a handsome outdoorsman with a great sense of humor. Yet the movies keep the rugged dragon-taimer only a fantasy. What a shame.

3. Squibs

Squibs, in simplest terms, are non-magical people born into magical families, which brings about a lot of guilt and shame. It's not the most common thing, but it does happen. The most famous Squib that we all know is Argus Filch, the not so lovable caretaker. The movies portray him as a background character and no one really cares about him. However, if you knew his backstory, you might actually feel a bit bad for the guy. Knowing this might even help you to understand why he's such a jerk- he works in a school with a bunch of magical kids, and he has to clean up after then without magic. Sucks really. There was a chance at the Squib plotline in Chamber of Secrets, where Harry and Ron find an envelope on the floor. The letter is from Kwikspell, and this scene shows how much Filch wants to fit in by trying to do magic. It's super sad really. Even more sad that the scene was deleted from the movie's final cut.

4. St. Mungo's

In my opinion, this is one of the most important things in the series, that is just simply left unknown. This is a chapter in The Order of the Phoenix, where Harry and Hermione go with the Weasley family to visit Mr. Weasley in the Wizard hospital after the snake attack. Why is this important? Because we get some insight on Neville. In the films, it is revealed that Neville's parents were tortured by Bellatrix, and that Neville grew up with his Nan. However, most assume his parents are dead. WRONG! They are actually very much alive, and living in the mental ward in St. Mungo's. Here's the saddest part: they have no idea who Neville is. Neville could have been the chosen one, but Voldemort picked Harry. Yes it's sad that James and Lily are dead, but I think it's even more upsetting that Frank and Alice Longbottom don't know their own son. Neville is one of my favorite characters, simply because of his backstory, yet this is something that you wouldn't know without reading the books, which honestly makes me angry.

Oh also, remember Lockheart from Chamber of Secrets? He's in the hospital too in the mental ward because he erased his own memory trying to erase Ron's. Remember that? It was funny, and it's nice to have some closure on what happened to him.

5. The Deathday Party

I've read the books more times than I can count, and honestly, I still think this is really random. In Chamber of Secrets, our favorite trio attend a party for Sir Nicholas de Mimsy Porpington (aka Nearly Headless Nick). The party is the 500th anniversary of Nick's death, which ghosts weirdly celebrate. The grossest part about this is the molded and overly rotten food, that smells terrible to anyone who is alive. However, the ghosts fly (or float?) through the food, because the smell is so strong that by passing through it, they can almost "taste it". (Pretty sad if you ask me, food is my favorite thing and I can't imagine not being able to taste it). While this may seem random, it's nice to see that Harry, Ron, and Hermione attend it. Normally deathday parties are only attended by people who are, well, dead. By having the trio go, it shows just how much they care (awh). It also makes Nick pretty popular among his ghost friends that he has living people there to celebrate.

6. Winky

So, long story short, Winky is an alcoholic house-elf. Great for a children's book huh? But she does have A LOT of backstory. (In fact, she's a big part in why Hermione started S.P.E.W.) Winky was the house-elf for the Crouch Family. She also played a huge role in helping Barty Crouch Jr. escape from Azkaban, which in turn led him to take Polyjuice potion and pretend to be Mad-Eye Moody in Goblet of Fire, which THEN led to the return of Voldemort. All of this you would never know if you only saw the movies. Wanna know exactly how Barty Jr. escaped? Better go read(:

7. Weasley is our King

Bet you had no idea that there is an entire song about how awesome Ron Weasley is. And honestly, I'm still a bit mad that I know all the words but can't sing it cause I don't know the dang tune! It was orginially sung by Slytherin to get him off his game when he was the new Quidditch Keeper. But after he shows how badass he is, the Gryffindors change all the words to praise him. Ron doesn't get too much of the limelight in any aspect of life. Hermione is special because she's a genius. Harry is special cause he's the chosen one. But Ron is just Ron. Order of the Phoenix was finally his year. He was awesome at Quidditch, had girls (aka Lavendar Brown) all over him, and pissed a whole lot of Slytherins off. How great is that? Finally, it wasn't all about Harry, and it was his chance to shine. But, no surprise, the movies took that all away from him. Sorry Ron.

8. The Gaunt Family

This is basically Voldemort's entire history. His grandfather, Marvolo Gaunt, was a pure-blood descendant of Salazar Slytherin. He and his son and daughter, Morfin and Merope, were the only living descendants left. Morfin shared the same beliefs as his father in keeping the bloodline pure. Generations of inbreeding left the Gaunts violent, mentally unstable, and poverty-stricken.Merope was abused mentally and physically by both her father and brother, until they were finally sent away to Azkaban. After they left, Merope fell in love with a handsome and wealthy muggle, Tom Riddle. She bewitched him into loving her back, and they were married. A year later he recovered and left her and their unborn child. Merope then died soon after giving birth at an orphanage, naming her son Tom Marvolo Riddle. This gives some insight into Voldemort and the horcruxes. Remember the locket? This belonged to Salazar Slytherin, and was passed down until it ended with Marvolo. The entire sixth book goes into a lot more detail about Voldemort's history. But we sadly get none of this translated on the screen.

9. Godric's Hollow Messages

Okay, this is probably the most tearjerking part out of the entire Harry Potter Series. Remember in Deathly Hallows, when Harry and Hermione go back to Godric's Hollow? They go past the house where Harry lived with his parents, where they were murdered and Harry defeated Voldemort. The house still sits in ruins, as almost a reminder to everyone of both the bad and the good that happened there. The best part of this are the messages left in Everlasting Ink on the gated entrance. People had carved in their names, initials, and even support messages. "Good luck Harry, wherever you are!". "If you read this Harry, we're all behind you!". "Long Live Harry Potter!". This is amazing to read about, and in the books it is a big moment for Harry. While it isn't necessarily that important to the plot of the book, it is a nice addition that I just wish we could've seen.

10. Peeves

Oh Peeves. He was very annoying. But somehow, he was still lovable. For those of you who don't know, Peeves was a poltergeist that has lived in Hogwarts since it's beginning. He loves causing mayhem throughout the castle, and was a constant pain to everyone, especially Filch. The only people that are able to control him are Dumbledore and the Bloody Baron (The Slytherin Ghost). The best part about Peeves was how much he pranked Dolores Umbridge, who we all know is even worse than Voldemort. His pranks not only on her, but throughout the rest of the series, added some light hearted comic relief. He even helped fight against Voldemort at the Battle of Hoqwarts. After Harry and the good guys won, Peeves went around singing a victory song, which made us all smile after such huge loss. While he may be annoying at times and cause a headache for everyone, Peeves was definitely an important part of the books.

Don't get me wrong, I LOVE everything about the Harry Potter films. I watch them so much that I can basically quote them word for word, which annoys everyone around me (sorry). I understand that from page to screen, details are going to be left out. And I think that everyone involved in the making of the movies did an INCREDIBLE job from start to finish. But this just goes to show you that seeing any movie is not and will never be the same as reading the book. Reading is fun, especially when the words are written by Jo. Now, you should go try it.