modernity vs modernness

modernity and modernness both are nouns.

Word	Noun	Adjective	Verb	Adverb
modernity	Yes	No	No	No
modernness	Yes	No	No	No

As nouns, modernity and modernness are synonyms defined as:

modernity and modernness: the quality of being current or of the present

Other synonyms of modernity include contemporaneity, contemporaneousness, modernism.

modernity (noun)	modernness (noun)
the quality of being current or of the present	the quality of being current or of the present