noun
avocation, pastime, diversion, sideline, side interest, leisure-time activity, personal obsession, specialty, whim, fad, unremunerative occupation, favorite occupation, favorite pursuit, pet topic, fancy, caprice, relaxation, whimsy, labor of love, play, craze, divertissement (French), sport, amusement, quest, craft, fun, art, game, vagary; see also distraction 2, entertainment 2.
