gear up vs modify

gear up and modify both are verbs.

Word	Noun	Adjective	Verb	Adverb
gear up	No	No	Yes	No
modify	No	No	Yes	No

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

gear up: make ready or suitable or equip in advance for a particular purpose or for some use, event, etc
modify: cause to change; make different; cause a transformation

Other hypernyms of gear up include alter, change.

gear up (verb)	modify (verb)
make ready or suitable or equip in advance for a particular purpose or for some use, event, etc	make less severe or harsh or extreme
	add a modifier to a constituent
	cause to change; make different; cause a transformation