dawdle vs dawdler

dawdle is not a noun while dawdler is a noun.

Word	Noun	Adjective	Verb	Adverb
dawdle	No	No	Yes	No
dawdler	Yes	No	No	No

dawdle (noun)	dawdler (noun)
	someone who takes more time than necessary; someone who lags behind

dawdle (verb)	dawdler (verb)
take one's time; proceed slowly
hang (back) or fall (behind) in movement, progress, development, etc.
waste time