seeder vs doer

seeder and doer both are nouns.

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

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

Other hypernyms of seeder include actor, worker.

seeder (noun)	doer (noun)
a kitchen utensil that removes seeds from fruit	a person who acts and gets things done
a mechanical device that sows grass seed or grain evenly over the ground
a person who seeds clouds