physical object vs formation

Other hyponyms of physical object include unit, whole, location, charm, good luck charm, curio, curiosity, oddity, oddment, peculiarity, rarity, draw, lot, film, hoodoo, je ne sais quoi, keepsake, relic, souvenir, token, filler, makeweight, part, portion, prop, property, snake, stuff, small beer, trifle, trivia, triviality, paring, catch, commemorative, discard, finding, floater, fomite, vehicle, geological formation, growth, hail, head, ice, dry land, earth, ground, land, solid ground, terra firma, ground, land, soil, moon, neighbor, neighbour, remains, ribbon, thread, shiner, vagabond, wall, web, clanker.