- proficiency - the quality of having great facility and competence
--1 is a kind of competence, competency
- proficiency, technique - skillfulness in the command of fundamentals deriving from practice and familiarity; "practice greatly improves proficiency"
--2 is a kind of skillfulness
--2 has particulars: brushwork; musketry - proficiency, technique - skillfulness in the command of fundamentals deriving from practice and familiarity; "practice greatly improves proficiency"