fingermark vs slur

fingermark and slur both are nouns.

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

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

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

fingermark (noun)	slur (noun)
a smudge made by a (dirty) finger	a blemish made by dirt
	a disparaging remark
	(music) a curved line spanning notes that are to be played legato

fingermark (verb)	slur (verb)
	become vague or indistinct
	utter indistinctly
	speak disparagingly of; e.g., make a racial slur
	play smoothly or legato