daub vs blot

daub and blot both are nouns.

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

As nouns, daub and blot are synonyms defined as:

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

daub (noun)	blot (noun)
an unskillful painting	an act that brings discredit to the person who does it
a blemish made by dirt	a blemish made by dirt
material used to daub walls

daub (verb)	blot (verb)
cover (a surface) by smearing (a substance) over it	dry (ink) with blotting paper
coat with plaster	make a spot or mark onto
apply to a surface