introvert vs modify

introvert is a noun but modify is not a noun.

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

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

Other hypernyms of introvert include alter, change.

introvert (noun)	modify (noun)
(psychology) a person who tends to shrink from social contacts and to become preoccupied with their own thoughts

introvert (verb)	modify (verb)
turn inside	make less severe or harsh or extreme
fold inwards	add a modifier to a constituent
	cause to change; make different; cause a transformation