heroics vs playacting

heroics and playacting both are nouns.

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

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

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

Other hypernyms of heroics include acting, performing, playing.

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