amelioration vs betterment

amelioration and betterment both are nouns.

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

As nouns, amelioration and betterment are synonyms defined as:

amelioration and betterment: the act of relieving ills and changing for the better

Other synonyms of amelioration include melioration.

amelioration (noun)	betterment (noun)
the act of relieving ills and changing for the better	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