possible vs applicant

possible and applicant both are nouns.

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

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

possible: an applicant who might be suitable
applicant: a person who requests or seeks something such as assistance or employment or admission

Other hypernyms of possible include applier.

possible (noun)	applicant (noun)
something that can be done	a person who requests or seeks something such as assistance or employment or admission
an applicant who might be suitable

possible (adjective)	applicant (adjective)
capable of happening or existing
existing in possibility