肩を竦める[katawosukumeru] to shrug one's shoulders
肩を持つ[katawomotsu] to side with
肩寄せる[katayoseru] to be (standing) together, an arm across the other's shoulder
肩こり[katakori] stiff shoulders
肩巾[hire] shawl (on shoulder of woman's dress)

肩車[kataguruma] riding piggyback
肩章[kenshou] shoulder strap
肩身[katami] shoulders
肩身が狭い[katamigasemai] feeling ashamed

肩胛骨[kenkoukotsu] shoulder-blade

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