hatmaker vs hatter

hatmaker and hatter both are nouns.

Word	Noun	Adjective	Verb	Adverb
hatmaker	Yes	No	No	No
hatter	Yes	No	No	No

As nouns, hatmaker and hatter are synonyms defined as:

Other synonyms of hatmaker include milliner, modiste.

hatmaker (noun)	hatter (noun)
someone who makes and sells hats	someone who makes and sells hats