1) Ability 2) Brushwork 3) Capability 4) Competence 5) Ease 6) Expertise 7) Expertness 8) Skilfulness 9) Skill 10) Technique 1) Competence 2) Competency 3) Skill 4) Skill and experience 5) The state of being proficient 
• (n.) The quality of state of being proficient; advance in the acquisition of any art, science, or knowledge; progression in knowledge; improvement; adeptness; as, to acquire proficiency in music.
[n] - skillfulness in the command of fundamentals deriving from practice and familiarity 2. [n] - the quality of having great facility and competence
noun the quality of having great facility and competence
the state of being proficient; skill; expertness: proficiency in music.
the quality of having great facility and competence