normalizer vs changer

normalizer and changer both are nouns.

Word	Noun	Adjective	Verb	Adverb
normalizer	Yes	No	No	No
changer	Yes	No	No	No

As nouns, changer is a hypernym of normalizer; that is, changer is a word with a broader meaning than normalizer:

Other hypernyms of normalizer include modifier.

normalizer (noun)	changer (noun)
a person who normalizes	an automatic mechanical device on a record player that causes new records to be played without manual intervention
	a person who changes something