jumble vs mare's nest

jumble and mare's nest both are nouns.

Word	Noun	Adjective	Verb	Adverb
jumble	Yes	No	Yes	No
mare's nest	Yes	No	No	No

As nouns, jumble and mare's nest are synonyms defined as:

Other synonyms of jumble include clutter, fuddle, muddle, smother, welter.

jumble (noun)	mare's nest (noun)
a theory or argument made up of miscellaneous or incongruous ideas	a confused multitude of things
small flat ring-shaped cake or cookie
a confused multitude of things

jumble (verb)	mare's nest (verb)
bring into random order
assemble without order or sense
be all mixed up or jumbled together