changer vs normaliser

changer and normaliser both are nouns.

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

As nouns, normaliser is a hyponym of changer; that is, normaliser is a word with a more specific, narrower meaning than changer:

Other hyponyms of changer include adulterator, normalizer, standardiser, standardizer.

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