espouse vs mismarry

espouse and mismarry both are verbs.

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

As verbs, mismarry is a hyponym of espouse; that is, mismarry is a word with a more specific, narrower meaning than espouse:

Other hyponyms of espouse include inmarry, wive, wive, intermarry, remarry.

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