the ability to do something successfully or efficiently

an area of skill or knowledge

कौशल या ज्ञान का एक क्षेत्र

English Usage: He demonstrated his competency in project management during the presentation.

Hindi Usage: उसने प्रस्तुति के दौरान परियोजना प्रबंधन में अपनी क्षमता प्रदर्शित की।