碾く[hiku] to saw
碾き茶[hikicha] powdered green tea (steamed and dried before being stone-ground)
碾臼[hikiusu] quern
粗碾き[arabiki] coarsely ground (e.g. coffee, grain)

碾き割り納豆[hikiwarinattou] natto made from ground soybeans
碾割り[hikiwari] grinding
碾割り麦[hikiwarimugi] ground barley

臼歯[kyuushi] molar
臼砲[kyuuhou] mortar
厚臼[atsuusu] stone hand mill
上臼[uwausu] upper millstone
石臼[ishiusu] stone mortar

脱臼[dakkyuu] dislocation
平臼[hirausu] horizontal stone hand mill
搗き臼[tsukiusu] mortar (for pounding rice)
唐臼[karausu] mortar