introvert vs alter

introvert is a noun but alter is not a noun.

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

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

Other hypernyms of introvert include change, modify.

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

introvert (verb)	alter (verb)
turn inside	remove the ovaries of
fold inwards	become different in some particular way, without permanently losing one's or its former characteristics or essence
	cause to change; make different; cause a transformation
	insert words into texts, often falsifying it thereby
	make an alteration to