accustom vs modify

accustom and modify both are verbs.

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

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

Other hypernyms of accustom include alter, change.

accustom (verb)	modify (verb)
make psychologically or physically used (to something)	make less severe or harsh or extreme
	add a modifier to a constituent
	cause to change; make different; cause a transformation