marry vs espouse

marry and espouse both are verbs.

Word	Noun	Adjective	Verb	Adverb
marry	No	No	Yes	No
espouse	No	No	Yes	No

As verbs, marry and espouse are synonyms defined as:

Other synonyms of marry include conjoin, get hitched with, get married, hook up with, wed.

marry (verb)	espouse (verb)
take in marriage; married	take up the cause, ideology, practice, method, of someone and use it as one's own
perform a marriage ceremony	choose and follow; as of theories, ideas, policies, strategies or plans
	take in marriage; married