Describe the similarities and differences in our culture compared to Ancient Greece concerning tragedy and comedy.

Ancient Greek tragedy and comedy had very well established generic convention while modern drama has a wide range of possibilities.
In staging, ancient Greek dramas were performed in theaters in which the audience sat in a semi-circular amphitheater extending up the sides of a hill. There was a circular orchestra (literally "dancing place") at the center of the theater and a stage and backdrop behind the orchestra. Modern theaters include "theaters in the round," based on Greek models, but also proscenium stages as well as various alternative theater spaces.
In ancient Greece, all roles, including female ones, were performed by men. In contemporary drama, women and men both perform various roles. Ancient Greek drama was written in verse, while modern drama can be in either verse or prose. Ancient Greek plays were limited to three actors and a chorus, with the chorus singing and dancing choral odes.
Modern drama, on the other hand, can be accompanied by music and song but is often spoken instead. Modern drama is often more "realistic" (at least in performance and presentation) than ancient drama, although certain genres of modern drama are highly stylized. Greek dramas were performed at religious festivals, whereas most modern drama is usually performed in secular spaces.