numbness vs passiveness

numbness and passiveness both are nouns.

Word	Noun	Adjective	Verb	Adverb
numbness	Yes	No	No	No
passiveness	Yes	No	No	No

As nouns, passiveness is a hypernym of numbness; that is, passiveness is a word with a broader meaning than numbness:

numbness: the trait of lacking enthusiasm for or interest in things generally
passiveness: the trait of remaining inactive; a lack of initiative

Other hypernyms of numbness include passivity.

numbness (noun)	passiveness (noun)
the trait of lacking enthusiasm for or interest in things generally	the trait of remaining inactive; a lack of initiative
partial or total lack of sensation in a part of the body; a symptom of nerve damage or dysfunction	submission to others or to outside influences