dominate vs reign

dominate is not a noun while reign is a noun.

Word	Noun	Adjective	Verb	Adverb
dominate	No	No	Yes	No
reign	Yes	No	Yes	No

As verbs, dominate and reign are synonyms defined as:

dominate and reign: be larger in number, quantity, power, status or importance

Other synonyms of dominate include predominate, prevail, rule.

dominate (noun)	reign (noun)
	royal authority; the dominion of a monarch
	the period during which a monarch is sovereign
	a period during which something or somebody is dominant or powerful

dominate (verb)	reign (verb)
have dominance or the power to defeat over	have sovereign power
be larger in number, quantity, power, status or importance	be larger in number, quantity, power, status or importance
be in control
look down on
be greater in significance than