hawker vs pitchman

hawker and pitchman both are nouns.

Word	Noun	Adjective	Verb	Adverb
hawker	Yes	No	No	No
pitchman	Yes	No	No	No

As nouns, hawker and pitchman are synonyms defined as:

hawker and pitchman: someone who travels about selling his wares (as on the streets or at carnivals)

Other synonyms of hawker include packman, peddler, pedlar.

hawker (noun)	pitchman (noun)
someone who travels about selling his wares (as on the streets or at carnivals)	someone who travels about selling his wares (as on the streets or at carnivals)
a person who breeds and trains hawks and who follows the sport of falconry	an aggressive salesman who uses a fast line of talk to sell something