slur vs daub

slur and daub both are nouns.

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

As nouns, slur and daub are synonyms defined as:

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

slur (noun)	daub (noun)
a blemish made by dirt	an unskillful painting
a disparaging remark	a blemish made by dirt
(music) a curved line spanning notes that are to be played legato	material used to daub walls

slur (verb)	daub (verb)
become vague or indistinct	cover (a surface) by smearing (a substance) over it
utter indistinctly	coat with plaster
speak disparagingly of; e.g., make a racial slur	apply to a surface
play smoothly or legato