骨董[kottou] antique
骨董品[kottouhin] curio
骨董品店[kottouhinten] antique store
骨董趣味[kottoushumi] antiquarianism

書画骨董[shogakottou] curios and objets d'art
骨董屋[kottouya] antique store
骨董店[kottouten] antique shop
骨董品屋[kottouhinya] antique shop

せん状骨[senjoukotsu] scaphoid bone (in wrist near thumb)
遺骨[ikotsu] remains
化骨[kakotsu] ossification
会厭軟骨[eennankotsu] epiglottis
がい骨[gaikotsu] skeleton

雁骨[kariganebone] scapula
気骨[kikotsu] (moral) backbone
侠骨[kyoukotsu] chivalrous spirit
胸骨[kyoukotsu] breastbone
筋骨[kinkotsu] muscles (sinews) and bones