subjectiveness vs subjectivity

subjectiveness and subjectivity both are nouns.

Word	Noun	Adjective	Verb	Adverb
subjectiveness	Yes	No	No	No
subjectivity	Yes	No	No	No

As nouns, subjectiveness and subjectivity are synonyms defined as:

subjectiveness and subjectivity: judgment based on individual personal impressions and feelings and opinions rather than external facts

subjectiveness (noun)	subjectivity (noun)
judgment based on individual personal impressions and feelings and opinions rather than external facts	judgment based on individual personal impressions and feelings and opinions rather than external facts