adopt vs latch on

adopt and latch on both are verbs.

Word	Noun	Adjective	Verb	Adverb
adopt	No	No	Yes	No
latch on	No	No	Yes	No

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

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

Other hyponyms of adopt include fasten on, hook on, seize on, take up.

adopt (verb)	latch on (verb)
take into one's family	understand, usually after some initial difficulty
take on a certain form, attribute, or aspect	adopt
take up the cause, ideology, practice, method, of someone and use it as one's own	take hold of or attach to
put into dramatic form
take up and practice as one's own
choose and follow; as of theories, ideas, policies, strategies or plans
take on titles, offices, duties, responsibilities