contemporaneity vs modernness

contemporaneity and modernness both are nouns.

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

As nouns, contemporaneity and modernness are synonyms defined as:

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

Other synonyms of contemporaneity include contemporaneousness, modernism, modernity.

contemporaneity (noun)	modernness (noun)
the quality of being current or of the present	the quality of being current or of the present
the quality of belonging to the same period of time