capability, expertise, skill
Competence is a high level of knowledge and skills in a given field. Competent people put a lot of effort into ensuring that the quality of their work meets the highest expectations. They are aware of the need for continuous self-improvement.
Competent people perform their duties excellently. They are accurate and effective in what they do.
When others are aware of our competence, they may try to burden us with too many responsibilities and tasks.