passiveness vs apathy

passiveness and apathy both are nouns.

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

As nouns, apathy is a hyponym of passiveness; that is, apathy is a word with a more specific, narrower meaning than passiveness:

Other hyponyms of passiveness include indifference, numbness, spiritlessness, listlessness, torpidity, torpidness, torpor.

passiveness (noun)	apathy (noun)
the trait of remaining inactive; a lack of initiative	the trait of lacking enthusiasm for or interest in things generally
submission to others or to outside influences	an absence of emotion or enthusiasm