vitalness vs indispensability

vitalness and indispensability both are nouns.

Word	Noun	Adjective	Verb	Adverb
vitalness	Yes	No	No	No
indispensability	Yes	No	No	No

As nouns, vitalness and indispensability are synonyms defined as:

vitalness and indispensability: the quality possessed by something that you cannot possibly do without

Other synonyms of vitalness include indispensableness.

vitalness (noun)	indispensability (noun)
the quality of being essential to maintain life	the quality possessed by something that you cannot possibly do without
the quality possessed by something that you cannot possibly do without