money changer vs money dealer

money changer and money dealer both are nouns.

Word	Noun	Adjective	Verb	Adverb
money changer	Yes	No	No	No
money dealer	Yes	No	No	No

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

money changer: one whose business is to exchange the money of one country for that of another country
money dealer: a person who receives or invests or pays out money

Other hypernyms of money changer include money handler.

money changer (noun)	money dealer (noun)
one whose business is to exchange the money of one country for that of another country	a person who receives or invests or pays out money