Aeschylus

Aeschylus refers specifically to the ancient Greek tragedian often hailed as the father of tragedy. Because it is a proper noun designating a unique historical individual, it does not function as a common noun and cannot be used to describe a category of people or things.

In academic and literary contexts, the name is synonymous with the evolution of drama, specifically the introduction of the second actor, which allowed for dialogue and conflict on stage. It is always capitalized and lacks any plural or metaphorical application in standard English.