classical mythology vs hero

classical mythology and hero both are nouns.

Word	Noun	Adjective	Verb	Adverb
classical mythology	Yes	No	No	No
hero	Yes	No	No	No

classical mythology (noun)	hero (noun)
the system of mythology of the Greeks and Romans together; much of Roman mythology (especially the gods) was borrowed from the Greeks	the principal character in a play or movie or novel or poem
	a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States
	a person distinguished by exceptional courage and nobility and strength
	someone who fights for a cause
	(classical mythology) a being of great strength and courage celebrated for bold exploits; often the offspring of a mortal and a god