mismarry vs espouse

mismarry and espouse both are verbs.

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

As verbs, espouse is a hypernym of mismarry; that is, espouse is a word with a broader meaning than mismarry:

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

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