valetudinarianism vs infirmity

valetudinarianism and infirmity both are nouns.

Word	Noun	Adjective	Verb	Adverb
valetudinarianism	Yes	No	No	No
infirmity	Yes	No	No	No

As nouns, valetudinarianism and infirmity are synonyms defined as:

valetudinarianism and infirmity: the state of being weak in health or body (especially from old age)

Other synonyms of valetudinarianism include debility, feebleness, frailness, frailty.

valetudinarianism (noun)	infirmity (noun)
the state of being weak in health or body (especially from old age)	the state of being weak in health or body (especially from old age)