passive vs resistless

passive is a noun but resistless is not a noun.

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

passive (noun)	resistless (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

passive (adjective)	resistless (adjective)
lacking in energy or will	impossible to resist; overpowering
expressing that the subject of the sentence is the patient of the action denoted by the verb	offering no resistance, passively accepting of a situation
peacefully resistant in response to injustice