smudge vs fingerprint

smudge and fingerprint both are nouns.

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

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

Other hyponyms of smudge include blotch, splodge, splotch, fingermark, inkblot.

smudge (noun)	fingerprint (noun)
a blemish made by dirt	a smudge made by a (dirty) finger
a smoky fire to drive away insects	a generic term for any identifying characteristic
	a print made by an impression of the ridges in the skin of a finger; often used for biometric identification in criminal investigations

smudge (verb)	fingerprint (verb)
make a smudge on; soil by smudging	take an impression of a person's fingerprints