Prose
The word "prose" first appears in English in the 14th century. It is derived from the Old French "prose", which in turn originates in the Latin expression "prosa oratio" (literally, straightforward or direct speech).
Greek tragedy
The origin of the word "tragedy" has been a matter of discussion from ancient times. The primary source of knowledge on the question is the "Poetics" of Aristotle. Aristotle was able to gather first-hand documentation from theater performance in Attica, which is inaccessible to scholars today. His work is therefore invaluable for the study of ancient tragedy, even if his testimony is open to doubt on some points.