hawker vs cheapjack

hawker and cheapjack both are nouns.

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

As nouns, cheapjack is a hyponym of hawker; that is, cheapjack is a word with a more specific, narrower meaning than hawker:

hawker: someone who travels about selling his wares (as on the streets or at carnivals)
cheapjack: a peddler of inferior goods

Other hyponyms of hawker include chapman, crier, muffin man, sandboy, transmigrante.

hawker (noun)	cheapjack (noun)
someone who travels about selling his wares (as on the streets or at carnivals)	a peddler of inferior goods
a person who breeds and trains hawks and who follows the sport of falconry

hawker (adjective)	cheapjack (adjective)
	made of inferior workmanship and materials