invalidate vs alter

invalidate and alter both are verbs.

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

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

Other hypernyms of invalidate include change, modify.

invalidate (verb)	alter (verb)
take away the legal force of or render ineffective	remove the ovaries of
show to be invalid	become different in some particular way, without permanently losing one's or its former characteristics or essence
make invalid for use	cause to change; make different; cause a transformation
declare invalid	insert words into texts, often falsifying it thereby
	make an alteration to