Every novel has a viewpoint character and a protagonist. However, they’re not necessarily the same person, at least not all of the time. Here’s a quick guide that explains the differences.
Stories usually have multiple characters, and often have more than one major character. However, just because a character has a major role does not make them a protagonist.
Stories can be narrated by different characters in a book. Whoever’s head the reader is in is called the viewpoint character. However, just because a character is narrating a story does not make them a protagonist or a major character.