renovation vs improvement

renovation and improvement both are nouns.

Word	Noun	Adjective	Verb	Adverb
renovation	Yes	No	No	No
improvement	Yes	No	No	No

As nouns, improvement is a hypernym of renovation; that is, improvement is a word with a broader meaning than renovation:

As nouns, improvement is a hypernym of renovation; that is, improvement is a word with a broader meaning than renovation:

Other hypernyms of renovation include melioration.

renovation (noun)	improvement (noun)
the act of improving by renewing and restoring	the act of improving something
the state of being restored to its former good condition	a change for the better; progress in development
	a condition superior to an earlier condition