Yes, both stood for different beliefs and both loved the same woman.
James Potter was an arrogant teenage boy. He and his mates ganged up on Severus Snape the moment they met him. James was popular and the leader of the Marauders and so was big headed. He randomly hexed people just because he could and in an attempt to impress Lily Evans - who was very much against his bullying and was, at that point, Snape's best friend.
However, deep down James was a good person and Snape was mean and nasty. James eventually grew up and stopped randomly hexing people whilst Snape become more involved with the Dark Arts and became a bully himself - only when Snape and his friends hexed people they used dark magic and spells that Snape had invented (at least one of which James used against him).
In his fifth year, Snape called Lily and mud-blood and ended their friendship as she decided he was too involved with the Dark Arts. By seventh year, James had grown up enough for Lily to love him and they began to date.
Because Gryffindor and Slytherin are rivals and Snape did not like Sirius' friend, James Potter. Also, Sirius and James targeted Severus as someone to humiliate throughout their school years.
Severus Snape
There are many reasons. James Potter and Severus Snape both loved the same person, Lily Evans. Lily hated James but was friends with Snape until her fifth year. She began to date James in her seventh year after he grew up a little. However, both were very jealous of each other. James also hated Snape because he was a Slytherin and supported the death eaters.
No, in fact, both of them hate each other.
In the movie, Severus Snape is seen sitting next Madam Irma Pince, the librarian of Hogwarts. On his other side is Professor Filius Flitwick.
The same actor as the other movies Alan Rickman
No. They hated each other.
J.K. Rowling has said that Severus Snape, along with many of her other characters, are loosely based on people she knew in real life, but developed their own distinct characteristics as she developed the character. Professor Snape is loosely based on a professor she had herself.
severus snape was killed by voldemort voldemort was killed by harry potter molly weasley killed bellatrix lestrange severus snape killed dumbledore (dumbledore asked snape to kill him as he was dying anyway and so it wouldnt damage damage malfoys soul) fred weasley was killed, and so were lupin+tonks and many other in the great battle of hogwarts.
Severus Snape is a fictional character in the Harry Potter series he cannot appear in another movie.If you mean Alan Rickman (the actor who played him), yes, he's been in many movies, including Dogma and Galaxy Quest. See related links for a full list.
Harry Potter himself is a round character. Other examples are Ron Weasley, Hermione Granger, Draco Malfoy, Severus Snape and Lord Voldemort.
When Hermione's opened her bag and told Harry where they were [The Forest of Dean] the portrait of Sirius's Godfather that was in her bag heard and told Severus Snape via his other portrait in Snape's office. Snape then went to the forest and sent his patronus which Harry followed.