muddiness vs opaqueness

muddiness and opaqueness both are nouns.

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

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

muddiness: the quality of being cloudy
opaqueness: the quality of being opaque to a degree; the degree to which something reduces the passage of light

Other hypernyms of muddiness include opacity.

muddiness (noun)	opaqueness (noun)
the quality of being cloudy	the quality of being opaque to a degree; the degree to which something reduces the passage of light
a mental state characterized by a lack of clear and orderly thought and behavior	incomprehensibility resulting from obscurity of meaning
the wetness of ground that is covered or soaked with water