Abilities are an underlying, enduring trait useful for performing a specified act or task, either physical or mental. Such powers can be learned or innate. For instance, oral comprehension is the ability to listen to and understand information and ideas presented through spoken words and sentences.
Human Resources.hrvinet.com, “KSA model – Knowledge, skills and abilities.” Online: http://www.humanresources.hrvinet.com/what-is-knowledge-skills-and-abilities-ksa-model/
Landine, Jeffrey and John Stewart, “Assessment in Career Guidance.” In Blythe C. Shepard and Priya S. Mani (editors). Career Development Practice in Canada: Perspectives, Principles and Professionalism. Toronto: Canadian Education and Research Institute for Counselling (CERIC), 2014, p.434.