applicant vs doer

applicant and doer both are nouns.

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

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

applicant: a person who requests or seeks something such as assistance or employment or admission
doer: a person who acts and gets things done

Other hypernyms of applicant include actor, worker.

applicant (noun)	doer (noun)
a person who requests or seeks something such as assistance or employment or admission	a person who acts and gets things done