affectation vs affectedness

affectation and affectedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
affectation	Yes	No	No	No
affectedness	Yes	No	No	No

As nouns, affectation and affectedness are synonyms defined as:

affectation and affectedness: a deliberate pretense or exaggerated display

Other synonyms of affectation include mannerism, pose.

affectation (noun)	affectedness (noun)
a deliberate pretense or exaggerated display	a deliberate pretense or exaggerated display
	the quality of being false or artificial (as to impress others)