marketplace vs outlet

marketplace and outlet both are nouns.

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

As nouns, outlet is a hypernym of marketplace; that is, outlet is a word with a broader meaning than marketplace:

marketplace: an area in a town where a public mercantile establishment is set up
outlet: a place of business for retailing goods

Other hypernyms of marketplace include mercantile establishment, retail store, sales outlet.

marketplace (noun)	outlet (noun)
the world of commercial activity where goods and services are bought and sold	activity that frees or expresses creative energy or emotion
an area in a town where a public mercantile establishment is set up	an opening that permits escape or release
	a place of business for retailing goods
	receptacle providing a place in a wiring system where current can be taken to run electrical devices