espouse vs seize on

espouse and seize on both are verbs.

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

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

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

Other hyponyms of espouse include fasten on, hook on, latch on, take up.

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