Exercise
Achievement, deed, exploit, attainment, feat, operation, stunt, coup, stroke of genius, act, exercise, performance, effort, manoeuvre, move, stratagem, master stroke, and triumph.
Attainment
Ability, skill, attainment, aptitude, capability, forte, expertise, expertness, adroitness, dexterity, mastery, competency, artistry, finesse, virtuosity, professionalism, smartness, versatility, talent, gift, achievement, faculty, proficiency, knack, skilfulness, adeptness, deftness, prowess, competence, efficiency, art, flair, experience, cleverness, ingenuity, and know-how.