fingermark vs smudge

fingermark and smudge both are nouns.

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

As nouns, smudge is a hypernym of fingermark; that is, smudge is a word with a broader meaning than fingermark:

Other hypernyms of fingermark include blot, daub, slur, smear, smirch, spot.

fingermark (noun)	smudge (noun)
a smudge made by a (dirty) finger	a blemish made by dirt
	a smoky fire to drive away insects

fingermark (verb)	smudge (verb)
	make a smudge on; soil by smudging