revitalization vs betterment

revitalization and betterment both are nouns.

Word	Noun	Adjective	Verb	Adverb
revitalization	Yes	No	No	No
betterment	Yes	No	No	No

As nouns, betterment is a hypernym of revitalization; that is, betterment is a word with a broader meaning than revitalization:

Other hypernyms of revitalization include advance, improvement.

revitalization (noun)	betterment (noun)
bringing again into activity and prominence	the act of relieving ills and changing for the better
	a change for the better; progress in development
	an improvement that adds to the value of a property or facility