heroics vs performing

heroics and performing both are nouns.

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

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

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

Other hypernyms of heroics include acting, playacting, playing.

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