appointment vs doer

appointment and doer both are nouns.

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

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

Other hypernyms of appointment include actor, worker.

appointment (noun)	doer (noun)
the act of putting a person into a non-elective position	a person who acts and gets things done
the job to which you are (or hope to be) appointed
(law) the act of disposing of property by virtue of the power of appointment
(usually in the plural) furnishings and equipment (especially for a ship or hotel)
a meeting arranged in advance
a person who is appointed to a job or position