applicant vs applier

applicant and applier both are nouns.

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

As nouns, applicant and applier are synonyms defined as:

applicant and applier: a person who requests or seeks something such as assistance or employment or admission

applicant (noun)	applier (noun)
a person who requests or seeks something such as assistance or employment or admission	a device for applying a substance
	a person who requests or seeks something such as assistance or employment or admission