jumble vs rummage

jumble and rummage both are nouns.

Word	Noun	Adjective	Verb	Adverb
jumble	Yes	No	Yes	No
rummage	Yes	No	Yes	No

As nouns, rummage is a hyponym of jumble; that is, rummage is a word with a more specific, narrower meaning than jumble:

jumble (noun)	rummage (noun)
a theory or argument made up of miscellaneous or incongruous ideas	a thorough search for something (often causing disorder or confusion)
small flat ring-shaped cake or cookie	a jumble of things to be given away
a confused multitude of things

jumble (verb)	rummage (verb)
bring into random order	search haphazardly
assemble without order or sense
be all mixed up or jumbled together