oddball vs doer

oddball and doer both are nouns.

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

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

Other hypernyms of oddball include actor, worker.

oddball (noun)	doer (noun)
a person with an unusual or odd personality	a person who acts and gets things done