prosiness vs prosaicness

prosiness and prosaicness both are nouns.

Word	Noun	Adjective	Verb	Adverb
prosiness	Yes	No	No	No
prosaicness	Yes	No	No	No

As nouns, prosiness and prosaicness are synonyms defined as:

prosiness and prosaicness: commonplaceness as a consequence of being humdrum and not exciting

prosiness (noun)	prosaicness (noun)
commonplaceness as a consequence of being humdrum and not exciting	commonplaceness as a consequence of being humdrum and not exciting