coyness vs affectedness

coyness and affectedness both are nouns.

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

As nouns, affectedness is a hypernym of coyness; that is, affectedness is a word with a broader meaning than coyness:

coyness: the affectation of being demure in a provocative way
affectedness: the quality of being false or artificial (as to impress others)

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