Definitions of competence
the ability to do something; the ability to do something well
His competence as a witness is questionable.
the power of court, authority or other official body to decide a legal case or to make an order or of a government to do something
It is essential that any legislation we bring forward is within the competence of the Scottish Parliament, both in terms of its overall substance, and its detailed provisions.
the quality of being real or true; authenticity
The outcome of this case will depend on how the document was obtained and of its competence as evidence at the trial.