murkiness vs fog

murkiness and fog both are nouns.

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

As nouns, murkiness and fog are synonyms defined as:

murkiness and fog: an atmosphere in which visibility is reduced because of a cloud of some substance

Other synonyms of murkiness include fogginess, murk.

murkiness (noun)	fog (noun)
the quality of being cloudy	confusion characterized by lack of clarity
an atmosphere in which visibility is reduced because of a cloud of some substance	droplets of water vapor suspended in the air near the ground
	an atmosphere in which visibility is reduced because of a cloud of some substance

murkiness (verb)	fog (verb)
	make less visible or unclear