rummage vs clutter

rummage and clutter both are nouns.

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

As nouns, clutter is a hypernym of rummage; that is, clutter is a word with a broader meaning than rummage:

Other hypernyms of rummage include fuddle, jumble, mare's nest, muddle, smother, welter.

rummage (noun)	clutter (noun)
a thorough search for something (often causing disorder or confusion)	unwanted echoes that interfere with the observation of signals on a radar screen
a jumble of things to be given away	a confused multitude of things

rummage (verb)	clutter (verb)
search haphazardly	fill a space in a disorderly way