plod vs plodder

plod and plodder both are nouns.

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

plod (noun)	plodder (noun)
the act of walking with a slow heavy gait	someone who moves slowly
	someone who works slowly and monotonously for long hours
	someone who walks in a laborious heavy-footed manner

plod (verb)	plodder (verb)
walk heavily and firmly, as when weary, or through mud