murkiness vs cloudiness

murkiness and cloudiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
murkiness	Yes	No	No	No
cloudiness	Yes	No	No	No

As nouns, murkiness and cloudiness are synonyms defined as:

Other synonyms of murkiness include muddiness.

murkiness (noun)	cloudiness (noun)
the quality of being cloudy	the quality of being cloudy
an atmosphere in which visibility is reduced because of a cloud of some substance	the state of the sky when it is covered by clouds
	gloomy semidarkness caused by cloud cover