牛脂[gyuushi] beef tallow
凝脂[gyoushi] solidified oil
脂薬[aburagusuri] plaster
合成樹脂[gouseijushi] plastics

脂が乗る[aburaganoru] to get into the swing of (one's work)
脂身[aburami] fat meat
脂性[aburashou] fatty constitution
脂っ濃い[aburakkoi] greasy

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