plodder vs dawdler

plodder and dawdler both are nouns.

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

As nouns, dawdler is a hypernym of plodder; that is, dawdler is a word with a broader meaning than plodder:

plodder: someone who moves slowly
dawdler: someone who takes more time than necessary; someone who lags behind

Other hypernyms of plodder include drone, laggard, lagger, poke, trailer.

plodder (noun)	dawdler (noun)
someone who moves slowly	someone who takes more time than necessary; someone who lags behind
someone who works slowly and monotonously for long hours
someone who walks in a laborious heavy-footed manner