predomination vs prepotency

predomination and prepotency both are nouns.

Word	Noun	Adjective	Verb	Adverb
predomination	Yes	No	No	No
prepotency	Yes	No	No	No

As nouns, predomination and prepotency are synonyms defined as:

predomination and prepotency: the state of being predominant over others

Other synonyms of predomination include predominance.

predomination (noun)	prepotency (noun)
the quality of being more noticeable than anything else	the state of being predominant over others
the state of being predominant over others