vapourousness vs muddiness

vapourousness and muddiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
vapourousness	Yes	No	No	No
muddiness	Yes	No	No	No

As nouns, muddiness is a hypernym of vapourousness; that is, muddiness is a word with a broader meaning than vapourousness:

Other hypernyms of vapourousness include cloudiness, murkiness.

vapourousness (noun)	muddiness (noun)
cloudiness resulting from haze or mist or vapor	the quality of being cloudy
	a mental state characterized by a lack of clear and orderly thought and behavior
	the wetness of ground that is covered or soaked with water