salubriousness vs salubrity

salubriousness and salubrity both are nouns.

Word	Noun	Adjective	Verb	Adverb
salubriousness	Yes	No	No	No
salubrity	Yes	No	No	No

As nouns, salubriousness and salubrity are synonyms defined as:

salubriousness and salubrity: the quality of being salubrious and invigorating

salubriousness (noun)	salubrity (noun)
the quality of being salubrious and invigorating	the quality of being salubrious and invigorating