accelerate vs modify

accelerate and modify both are verbs.

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

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

Other hypernyms of accelerate include alter, change.

accelerate (verb)	modify (verb)
move faster	make less severe or harsh or extreme
cause to move faster	add a modifier to a constituent
	cause to change; make different; cause a transformation