荊棘[odoro] briars
棘皮動物[kyokuhidoubutsu] echinoderm
荊棘[keikyoku] wild rose
荊棘線[barasen] barbed wire

骨棘[kotsukyoku] bone spur
棘魚[togeuo] stickleback (any fish of family Gasterosteidae)
棘鼠[togenezumi] Ryukyu spiny rat (Tokudaia osimensis)
棘条[kyokujou] spiny ray (of a fin)

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