monopoly vs market place

monopoly and market place both are nouns.

Word	Noun	Adjective	Verb	Adverb
monopoly	Yes	No	No	No
market place	Yes	No	No	No

As nouns, market place is a hypernym of monopoly; that is, market place is a word with a broader meaning than monopoly:

monopoly: (economics) a market in which there are many buyers but only one seller
market place: the world of commercial activity where goods and services are bought and sold

Other hypernyms of monopoly include market, marketplace.

monopoly (noun)	market place (noun)
(economics) a market in which there are many buyers but only one seller	the world of commercial activity where goods and services are bought and sold
exclusive control or possession of something	an area in a town where a public mercantile establishment is set up