skidder vs doer

skidder and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
skidder	Yes	No	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of skidder; that is, doer is a word with a broader meaning than skidder:

Other hypernyms of skidder include actor, worker.

skidder (noun)	doer (noun)
a tractor used to haul logs over rough terrain	a person who acts and gets things done
a worker who uses a skid to move logs
a person who slips or slides because of loss of traction