elder vs doer

elder and doer both are nouns.

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

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

Other hypernyms of elder include actor, worker.

elder (noun)	doer (noun)
a person who is older than you are	a person who acts and gets things done
any of various church officers
any of numerous shrubs or small trees of temperate and subtropical Northern Hemisphere having white flowers and berrylike fruit

elder (adjective)	doer (adjective)
used of the older of two persons of the same name especially used to distinguish a father from his son