domination vs ascendance

domination and ascendance both are nouns.

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

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

domination: power to dominate or defeat
ascendance: the state that exists when one person or group has power over another

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

domination (noun)	ascendance (noun)
social control by dominating	the state that exists when one person or group has power over another
power to dominate or defeat