ornament vs alter

ornament is a noun but alter is not a noun.

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

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

Other hypernyms of ornament include change, modify.

ornament (noun)	alter (noun)
something used to beautify

ornament (verb)	alter (verb)
make more attractive by adding ornament, colour, etc.	remove the ovaries of
be an ornament to	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