amend vs alter

amend and alter both are verbs.

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

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

Other hypernyms of amend include change, modify.

amend (verb)	alter (verb)
to make better	remove the ovaries of
set straight or right	become different in some particular way, without permanently losing one's or its former characteristics or essence
make amendments to	cause to change; make different; cause a transformation
	insert words into texts, often falsifying it thereby
	make an alteration to