assumption vs audaciousness

assumption and audaciousness both are nouns.

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

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

Other hypernyms of assumption include audacity.

assumption (noun)	audaciousness (noun)
the act of taking possession of or power over something	fearless daring
the act of assuming or taking for granted	aggressive boldness or unmitigated effrontery
audacious (even arrogant) behavior that you have no right to
a hypothesis that is taken for granted
a statement that is assumed to be true and from which a conclusion can be drawn