monopsony vs marketplace

monopsony and marketplace both are nouns.

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

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

monopsony: (economics) a market in which goods or services are offered by several sellers but there is only one buyer
marketplace: the world of commercial activity where goods and services are bought and sold

Other hypernyms of monopsony include market, market place.

monopsony (noun)	marketplace (noun)
(economics) a market in which goods or services are offered by several sellers but there is only one buyer	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