smudge vs smirch

smudge and smirch both are nouns.

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

As nouns, smudge and smirch are synonyms defined as:

Other synonyms of smudge include blot, daub, slur, smear, spot.

smudge (noun)	smirch (noun)
a blemish made by dirt	an act that brings discredit to the person who does it
a smoky fire to drive away insects	a blemish made by dirt

smudge (verb)	smirch (verb)
make a smudge on; soil by smudging	charge falsely or with malicious intent; attack the good name and reputation of someone
	smear so as to make dirty or stained