rarify vs modify

rarify and modify both are verbs.

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

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

Other hypernyms of rarify include alter, change.

rarify (verb)	modify (verb)
make more complex, intricate, or richer	make less severe or harsh or extreme
	add a modifier to a constituent
	cause to change; make different; cause a transformation