invulnerable vs invulnerability

invulnerable is not a noun while invulnerability is a noun.

Word	Noun	Adjective	Verb	Adverb
invulnerable	No	Yes	No	No
invulnerability	Yes	No	No	No

invulnerable (noun)	invulnerability (noun)
	the property of being invulnerable; the property of being incapable of being hurt (physically or emotionally)
	having the strength to withstand attack

invulnerable (adjective)	invulnerability (adjective)
immune to attack; impregnable