energize vs alter

energize and alter both are verbs.

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

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

Other hypernyms of energize include change, modify.

energize (verb)	alter (verb)
cause to be alert and energetic	remove the ovaries of
raise to a higher energy level	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