the quality of being able to perform; a quality that permits or facilitates achievement or accomplishment | the ability to respond to physical stimuli or to register small physical amounts or differences |
possession of the qualities (especially mental qualities) required to do something or get something done | the ability to respond to affective changes in your interpersonal environment |
| (physiology) responsiveness to external stimuli; the faculty of sensation |
| sensitivity to emotional feelings (of self and others) |