crier vs peddler

crier and peddler both are nouns.

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

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

crier: a peddler who shouts to advertise the goods he sells
peddler: someone who travels about selling his wares (as on the streets or at carnivals)

Other hypernyms of crier include hawker, packman, pedlar, pitchman, bawler, bellower, roarer, screamer, screecher, shouter, yeller.

crier (noun)	peddler (noun)
(formerly) an official who made public announcements	someone who travels about selling his wares (as on the streets or at carnivals)
a person who weeps	an unlicensed dealer in illegal drugs
a peddler who shouts to advertise the goods he sells