deadness vs inanimateness

deadness and inanimateness both are nouns.

Word	Noun	Adjective	Verb	Adverb
deadness	Yes	No	No	No
inanimateness	Yes	No	No	No

As nouns, inanimateness is a hypernym of deadness; that is, inanimateness is a word with a broader meaning than deadness:

Other hypernyms of deadness include lifelessness.

deadness (noun)	inanimateness (noun)
the inanimate property of something that has died	not having life
the physical property of something that has lost its elasticity
the quality of being unresponsive; not reacting; as a quality of people, it is marked by a failure to respond quickly or with emotion to people or events