heroics vs acting

heroics and acting both are nouns.

Word	Noun	Adjective	Verb	Adverb
heroics	Yes	No	No	No
acting	Yes	Yes	No	No

As nouns, acting is a hypernym of heroics; that is, acting is a word with a broader meaning than heroics:

heroics: ostentatious or vainglorious or extravagant or melodramatic conduct
acting: the performance of a part or role in a drama

Other hypernyms of heroics include performing, playacting, playing.

heroics (noun)	acting (noun)
ostentatious or vainglorious or extravagant or melodramatic conduct	the performance of a part or role in a drama

heroics (adjective)	acting (adjective)
	serving temporarily especially as a substitute