prison cell vs cooler

prison cell and cooler both are nouns.

Word	Noun	Adjective	Verb	Adverb
prison cell	Yes	No	No	No
cooler	Yes	No	No	No

As nouns, cooler is a hyponym of prison cell; that is, cooler is a word with a more specific, narrower meaning than prison cell:

Other hyponyms of prison cell include bullpen, detention cell, detention centre, tank, dungeon, guardroom, hold, keep, sweatbox.

prison cell (noun)	cooler (noun)
a room where a prisoner is kept	a refrigerator for cooling liquids
	a cell for violent prisoners
	an iced drink especially white wine and fruit juice