Americanise vs modify

Americanise and modify both are verbs.

Word	Noun	Adjective	Verb	Adverb
Americanise	No	No	Yes	No
modify	No	No	Yes	No

As verbs, modify is a hypernym of Americanise; that is, modify is a word with a broader meaning than Americanise:

Other hypernyms of Americanise include alter, change.

Americanise (verb)	modify (verb)
become American in character	make less severe or harsh or extreme
make American in character	add a modifier to a constituent
	cause to change; make different; cause a transformation