angulate vs alter

angulate is an adjective but alter is not an adjective.

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

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

Other hypernyms of angulate include change, modify.

angulate (adjective)	alter (adjective)
having angles or an angular shape

angulate (verb)	alter (verb)
make or become angular	remove the ovaries of
	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