normalize vs alter

normalize and alter both are verbs.

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

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

Other hypernyms of normalize include change, modify.

normalize (verb)	alter (verb)
make normal or cause to conform to a norm or standard	remove the ovaries of
bring to a desired consistency, texture, or hardness by a process of gradually heating and cooling	become different in some particular way, without permanently losing one's or its former characteristics or essence
become normal or return to its normal state	cause to change; make different; cause a transformation
	insert words into texts, often falsifying it thereby
	make an alteration to