predominance vs ascendance

predominance and ascendance both are nouns.

Word	Noun	Adjective	Verb	Adverb
predominance	Yes	No	No	No
ascendance	Yes	No	No	No

As nouns, ascendance is a hypernym of predominance; that is, ascendance is a word with a broader meaning than predominance:

predominance: the state of being predominant over others
ascendance: the state that exists when one person or group has power over another

Other hypernyms of predominance include ascendancy, ascendence, ascendency, control, dominance.

predominance (noun)	ascendance (noun)
the quality of being more noticeable than anything else	the state that exists when one person or group has power over another
the state of being predominant over others