smear vs blot

smear and blot both are nouns.

Word	Noun	Adjective	Verb	Adverb
smear	Yes	No	Yes	No
blot	Yes	No	Yes	No

As nouns, smear and blot are synonyms defined as:

Other synonyms of smear include smirch, spot, stain.

As nouns, smear and blot are synonyms defined as:

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

smear (noun)	blot (noun)
an act that brings discredit to the person who does it	an act that brings discredit to the person who does it
a blemish made by dirt	a blemish made by dirt
a thin tissue or blood sample spread on a glass slide and stained for cytologic examination and diagnosis under a microscope
slanderous defamation

smear (verb)	blot (verb)
charge falsely or with malicious intent; attack the good name and reputation of someone	dry (ink) with blotting paper
make a smudge on; soil by smudging	make a spot or mark onto
stain by smearing or daubing with a dirty substance
cover (a surface) by smearing (a substance) over it