competency vs competent

competency is a noun but competent is not a noun.

Word	Noun	Adjective	Verb	Adverb
competency	Yes	No	No	No
competent	No	Yes	No	No

competency (noun)	competent (noun)
the quality of being adequately or well qualified physically and intellectually

competency (adjective)	competent (adjective)
	properly or sufficiently qualified or capable or efficient
	legally qualified or sufficient
	adequate, but not outstanding or exceptional