supine vs passive

supine is not a noun while passive is a noun.

Word	Noun	Adjective	Verb	Adverb
supine	No	Yes	No	No
passive	Yes	Yes	No	No

supine (noun)	passive (noun)
	the voice used to indicate that the grammatical subject of the verb is the recipient (not the source) of the action denoted by the verb

supine (adjective)	passive (adjective)
passive as a result of indolence or indifference	lacking in energy or will
lying face upward	expressing that the subject of the sentence is the patient of the action denoted by the verb
	peacefully resistant in response to injustice