couch vs formulate

couch is a noun but formulate is not a noun.

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

As verbs, formulate is a hypernym of couch; that is, formulate is a word with a broader meaning than couch:

Other hypernyms of couch include articulate, give voice, phrase, word.

couch (noun)	formulate (noun)
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

couch (verb)	formulate (verb)
formulate in a particular style or language	put into words or an expression
	elaborate, as of theories and hypotheses
	come up with (an idea, plan, explanation, theory, or principle) after a mental effort
	prepare according to a formula