muddle vs difficulty

muddle and difficulty both are nouns.

Word	Noun	Adjective	Verb	Adverb
muddle	Yes	No	Yes	No
difficulty	Yes	No	No	No

As nouns, difficulty is a hypernym of muddle; that is, difficulty is a word with a broader meaning than muddle:

muddle: informal terms for a difficult situation
difficulty: the quality of being almost beyond one's ability to deal with and requiring a great effort to achieve a positive result

Other hypernyms of muddle include difficultness.

muddle (noun)	difficulty (noun)
a confused multitude of things	an effort that is inconvenient
informal terms for a difficult situation	the quality of being almost beyond one's ability to deal with and requiring a great effort to achieve a positive result

muddle (verb)	difficulty (verb)
mix up or confuse
make into a puddle