long suit, métier(also metier), speciality, specialty, strong suit, thing

area, arena, bailiwick, business, circle, demesne, department, discipline, domain, fief, fiefdom, field, line, precinct, province, realm, sphere, terrainelementaptitude, aptness, bent, faculty, flair, genius, gift, knack, talentpursuit, racket, vocationinclination, leaning, partiality, penchant, predilection, predisposition, proclivity, propensity, tendency