supremacy vs ascendence

supremacy and ascendence both are nouns.

Word	Noun	Adjective	Verb	Adverb
supremacy	Yes	No	No	No
ascendence	Yes	No	No	No

As nouns, ascendence is a hypernym of supremacy; that is, ascendence is a word with a broader meaning than supremacy:

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

Other hypernyms of supremacy include ascendance, ascendancy, ascendency, control, dominance.

supremacy (noun)	ascendence (noun)
power to dominate or defeat	the state that exists when one person or group has power over another