mart vs marketplace

mart and marketplace both are nouns.

Word	Noun	Adjective	Verb	Adverb
mart	Yes	No	No	No
marketplace	Yes	No	No	No

As nouns, mart and marketplace are synonyms defined as:

mart and marketplace: an area in a town where a public mercantile establishment is set up

Other synonyms of mart include market, market place.

mart (noun)	marketplace (noun)
an area in a town where a public mercantile establishment is set up	the world of commercial activity where goods and services are bought and sold
	an area in a town where a public mercantile establishment is set up