perplexity vs muddiness

perplexity and muddiness both are nouns.

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

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

perplexity: trouble or confusion resulting from complexity
muddiness: a mental state characterized by a lack of clear and orderly thought and behavior

Other hypernyms of perplexity include confusedness, confusion, disarray, mental confusion.

perplexity (noun)	muddiness (noun)
trouble or confusion resulting from complexity	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