peddler vs vendor

peddler and vendor both are nouns.

Word	Noun	Adjective	Verb	Adverb
peddler	Yes	No	No	No
vendor	Yes	No	No	No

As nouns, vendor is a hypernym of peddler; that is, vendor is a word with a broader meaning than peddler:

peddler: someone who travels about selling his wares (as on the streets or at carnivals)
vendor: someone who promotes or exchanges goods or services for money

Other hypernyms of peddler include marketer, seller, trafficker, vender.

peddler (noun)	vendor (noun)
someone who travels about selling his wares (as on the streets or at carnivals)	someone who promotes or exchanges goods or services for money
an unlicensed dealer in illegal drugs