salubrity vs salubriousness

salubrity and salubriousness both are nouns.

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

As nouns, salubrity and salubriousness are synonyms defined as:

salubrity and salubriousness: the quality of being salubrious and invigorating

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