fasten on vs adopt

fasten on and adopt both are verbs.

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

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

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

Other hypernyms of fasten on include embrace, espouse, sweep up.

fasten on (verb)	adopt (verb)
adopt	take into one's family
	take on a certain form, attribute, or aspect
	take up the cause, ideology, practice, method, of someone and use it as one's own
	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