audaciousness vs hardiness

audaciousness and hardiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
audaciousness	Yes	No	No	No
hardiness	Yes	No	No	No

As nouns, hardiness is a hypernym of audaciousness; that is, hardiness is a word with a broader meaning than audaciousness:

audaciousness: fearless daring
hardiness: the trait of being willing to undertake things that involve risk or danger

Other hypernyms of audaciousness include boldness, daring, hardihood.

audaciousness (noun)	hardiness (noun)
fearless daring	the property of being strong and healthy in constitution
aggressive boldness or unmitigated effrontery	the trait of being willing to undertake things that involve risk or danger