competence vs competent

competence is a noun but competent is not a noun.

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

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

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