兎や角言う[toyakakuiu] to say all kinds of things
まっ四角[masshikaku] square
アフリカの角[afurikanotsuno] horn of Africa
一角[ikkaku] corner
一角の人物[hitokadonojinbutsu] somebody (important)

一角獣[ikkakujuu] unicorn
烏犀角[usaikaku] black rhinoceros horn
鋭角[eikaku] acute angle
外角[gaikaku] outside corner
町角[machikado] street corner

円錐[ensui] cone
円錐[marugiri] round gimlet
円錐曲線[ensuikyokusen] conic curve
円錐形[ensuikei] cone
円錐体[ensuitai] cone

角錐[kakusui] pyramid
三角錐[sankakusui] triangular pyramid
円錐台[ensuidai] circular truncated cone
立錐[rissui] setting a drill bit