lounge vs couch

lounge and couch both are nouns.

Word	Noun	Adjective	Verb	Adverb
lounge	Yes	No	Yes	No
couch	Yes	No	Yes	No

As nouns, lounge and couch are synonyms defined as:

Other synonyms of lounge include sofa.

lounge (noun)	couch (noun)
a room (as in a hotel or airport) with seating where people can wait	an upholstered seat for more than one person
an upholstered seat for more than one person	a narrow bed on which a patient lies during psychiatric or psychoanalytic treatment
	a flat coat of paint or varnish used by artists as a primer

lounge (verb)	couch (verb)
sit or recline comfortably	formulate in a particular style or language
be about a place without any apparent purpose