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.
Ideas are forever. There are many important differences between Greek tragedy and Shakespearean tragedy. Greek tragedy was performed as part of a religious festival (like a church christmas play) - so the stories were already known to the audience, and everyone knew what was going to happen next.