Here's why:
* Antagonist specifically refers to the character who opposes the protagonist (the main character) in a story. This opposition can be in the form of physical conflict, ideological differences, or simply competing goals.
* While "villain" is often used interchangeably, it implies a morally reprehensible character with malicious intentions. Not all antagonists are villains; some might simply have different goals or perspectives than the protagonist.
Other terms for villains include:
* Nemesis: A powerful and inescapable opponent who often embodies the protagonist's inner flaws or weaknesses.
* Foil: A character who contrasts with the protagonist, highlighting their strengths and weaknesses.
* Shadow: A character who represents the darker aspects of the protagonist's personality.
Ultimately, the best term to use depends on the specific context and the nature of the character in question.