DYFALU: A Welsh term for a form of fanciful conceit in which a string of sequential metaphors compares an object to a number of diverse things--often using compound words in a manner similar to the Anglo-Saxon or Old Norse kenning.
A comedy, in contrast to a tragedy, is a genre of drama in literature that is characterized by its happy and vivacious ending. Besides making the audience happy, a comedy rather importantly intends to evoke humour and amusement in the audience by means of extensive laughter.
Tragedy is kind of drama that presents a serious subject matter about human suffering and corresponding terrible events in a dignified manner. The term is Greek in origin, dating back to the 5th century BC. It was a name assigned by the Greeks to a specific form of plays performed on festivals in Greece.