Board Thread:Questions and Answers/@comment-29414935-20171003195741/@comment-2245864-20171006150227

antagonist = an obstacle, a hindrance, a nuisance or something to work against.. be it a living creature or an event.

villain = a living creature that seeks to do harm to others.

a man walks home from a busy day at work, he finds himself blocked by a rainstorm - the rainstorm is an antagonistic force, as it causes a conflict.. he takes shelter from the storm to dry off and is mugged by a thug, the mugger is a villain as they are a malicious character in the story.