The difference between classic comedy and tragedy is a difference in outcome. Tragedies end with the destruction of most of the characters, and usually their death. Comedies end with happiness and often marriage for most of the characters.
Comedies are funny, tragedies are sadIn tragedies, things for the protagonist go from bad to worse from the end. In comedy, everything ends up well at the ending.
basically the only difference is the ending. a comedy will have a happy ending i.e. wedding, whereas a tragedy will have a sad ending usually the death of the main character. either one can have...
A comedy ends happily, generally with one or more weddings; a tragedy is when the main character and often a bunch of others end up lying on the floor dead. examples: comedy: All's Well That Ends...