audacity vs assumption

audacity and assumption both are nouns.

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

As nouns, assumption is a hyponym of audacity; that is, assumption is a word with a more specific, narrower meaning than audacity:

Other hyponyms of audacity include effrontery, presumption, presumptuousness.

audacity (noun)	assumption (noun)
fearless daring	the act of taking possession of or power over something
aggressive boldness or unmitigated effrontery	the act of assuming or taking for granted
	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