smudge vs dust

smudge and dust both are nouns.

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

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

Other hyponyms of smudge include resmudge.

smudge (noun)	dust (noun)
a blemish made by dirt	fine powdery material such as dry earth or pollen that can be blown about in the air
a smoky fire to drive away insects	the remains of something that has been destroyed or broken up
	free microscopic particles of solid material

smudge (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