seize on vs espouse

seize on and espouse both are verbs.

Word	Noun	Adjective	Verb	Adverb
seize on	No	No	Yes	No
espouse	No	No	Yes	No

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

seize on: adopt
espouse: take up the cause, ideology, practice, method, of someone and use it as one's own

Other hypernyms of seize on include adopt, embrace, sweep up.

seize on (verb)	espouse (verb)
adopt	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