drug peddler vs drug dealer

drug peddler and drug dealer both are nouns.

Word	Noun	Adjective	Verb	Adverb
drug peddler	Yes	No	No	No
drug dealer	Yes	No	No	No

As nouns, drug peddler and drug dealer are synonyms defined as:

Other synonyms of drug peddler include drug trafficker, peddler, pusher.

drug peddler (noun)	drug dealer (noun)
an unlicensed dealer in illegal drugs	an unlicensed dealer in illegal drugs