deadness vs inelasticity

deadness and inelasticity both are nouns.

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

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

deadness (noun)	inelasticity (noun)
the inanimate property of something that has died	the lack of elasticity
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