divider vs doer

divider and doer both are nouns.

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

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

Other hypernyms of divider include actor, worker.

divider (noun)	doer (noun)
a vertical structure that divides or separates (as a wall divides one room from another)	a person who acts and gets things done
a drafting instrument resembling a compass that is used for dividing lines into equal segments or for transferring measurements
a person who separates something into parts or groups
a taxonomist who classifies organisms into many groups on the basis of relatively minor characteristics