smutch vs dust

smutch is not a noun while dust is a noun.

Word	Noun	Adjective	Verb	Adverb
smutch	No	No	Yes	No
dust	Yes	No	Yes	No

As verbs, dust is a hyponym of smutch; that is, dust is a word with a more specific, narrower meaning than smutch:

Other hyponyms of smutch include resmudge.

smutch (noun)	dust (noun)
	fine powdery material such as dry earth or pollen that can be blown about in the air
	the remains of something that has been destroyed or broken up
	free microscopic particles of solid material

smutch (verb)	dust (verb)
make a smudge on; soil by smudging	remove the dust from
	distribute loosely
	rub the dust over a surface so as to blur the outlines of a shape
	cover with a light dusting of a substance