spiritlessness vs passivity

spiritlessness and passivity both are nouns.

Word	Noun	Adjective	Verb	Adverb
spiritlessness	Yes	No	No	No
passivity	Yes	No	No	No

As nouns, passivity is a hypernym of spiritlessness; that is, passivity is a word with a broader meaning than spiritlessness:

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

Other hypernyms of spiritlessness include passiveness.

spiritlessness (noun)	passivity (noun)
the trait of lacking enthusiasm for or interest in things generally	the trait of remaining inactive; a lack of initiative
	submission to others or to outside influences