able vs competent

able and competent both are adjectives.

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

able (adjective)	competent (adjective)
(usually followed by `to') having the necessary means or skill or know-how or authority to do something	properly or sufficiently qualified or capable or efficient
having inherent physical or mental ability or capacity	legally qualified or sufficient
have the skills and qualifications to do things well	adequate, but not outstanding or exceptional
having a strong healthy body