Synonyms: ability, skill, competence, talent, capability
ability: a natural tendency to do something well
Example: I admire his ability to stay calm in difficult situations.
skill: the ability to do something well as a result of training or experience
Example: Portrait painting needs a lot of skill. This job will help you develop
competence: the quality of being able to do a job or task well enough
Example: Does she have the necessary competence in foreign languages?
talent: an usually good natural ability, especially for something artistic
She’s done well in the theatre – we always knew she had talent.
capability: the practical ability to do something
Example: We have the capability to produce a better machine than this.
inability: the state of being unable to do something