costermonger vs barrow-boy

costermonger and barrow-boy both are nouns.

Word	Noun	Adjective	Verb	Adverb
costermonger	Yes	No	No	No
barrow-boy	Yes	No	No	No

As nouns, costermonger and barrow-boy are synonyms defined as:

costermonger and barrow-boy: a hawker of fruit and vegetables from a barrow

Other synonyms of costermonger include barrow-man.

costermonger (noun)	barrow-boy (noun)
a hawker of fruit and vegetables from a barrow	a hawker of fruit and vegetables from a barrow