A carouser is someone who engages in boisterous, drunken revelry. They often attend parties and other social gatherings where alcohol is consumed. A bacchant is a follower of the god Bacchus, the Roman god of wine and intoxication. They are known for their wild and frenzied behavior, often involving excessive drinking and partying. Both terms refer to people who engage in drunken revelry and are often used interchangeably.