packman vs pitchman

packman and pitchman both are nouns.

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

As nouns, packman and pitchman are synonyms defined as:

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

Other synonyms of packman include hawker, peddler, pedlar.

packman (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)
	an aggressive salesman who uses a fast line of talk to sell something