In mathematics, infinity is the conceptual expression of such a numberless number. It is often symbolized by the lemniscate (also known as the lemniscate of Bernoulli), which looks something like the numeral 8 written sideways (). This symbol for infinity was first used in the 1600s by the mathematician John Wallis.
An epic is a poem; most epics started as oral tales that were passed down from generation to generation (often in the form of songs), which is why they're poems. A legend and a myth are more similar, but a myth most often explains something about the universe. So while there might be a legend about a man who slayed all the dragons, a myth would be about the man who caused it to rain, or how humans were created. Those are the basics differences.
The ToneThe main difference between Shakepearean comedy and Shakespearean tragedy is the tone. The comedy is designed to be funny, while the tragedy will be sad... that is the main difference, and one that you can predict before even reading them. The difference is that a comedy has a light romantic spot to it while usually the tragedies have killing and despair. People laugh in a comedy and people cry in a tragedy.