applier vs apply

applier is a noun but apply is not a noun.

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

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

applier (verb)	apply (verb)
	ask (for something)
	refer (a word or name) to a person or thing
	put into service; make work or employ for a particular purpose or for its inherent or natural purpose
	coat, cover or smear a surface with
	give or convey physically
	avail oneself to
	ensure observance of laws and rules
	apply oneself to
	be pertinent or relevant or applicable
	be applicable to; as to an analysis