comfort station vs john

comfort station and john both are nouns.

Word	Noun	Adjective	Verb	Adverb
comfort station	Yes	No	No	No
john	Yes	No	No	No

As nouns, john is a hypernym of comfort station; that is, john is a word with a broader meaning than comfort station:

Other hypernyms of comfort station include facility, bathroom, can, lav, lavatory, privy, toilet.

comfort station (noun)	john (noun)
a toilet that is available to the public	a room or building equipped with one or more toilets
	a prostitute's customer