trafficker vs seller

trafficker and seller both are nouns.

Word	Noun	Adjective	Verb	Adverb
trafficker	Yes	No	No	No
seller	Yes	No	No	No

As nouns, trafficker and seller are synonyms defined as:

trafficker and seller: someone who promotes or exchanges goods or services for money

Other synonyms of trafficker include marketer, vender, vendor.

trafficker (noun)	seller (noun)
someone who promotes or exchanges goods or services for money	someone who promotes or exchanges goods or services for money