ruì
tenon
tool handle; wedge
凿枘
záo ruì
see 枘鑿|枘凿[rui4 zao2]
圆凿方枘
yuán záo fāng ruì
see 方枘圓鑿|方枘圆凿[fang1 rui4 yuan2 zao2]
方枘圆凿
fāng ruì yuán záo
lit. like a square peg in a round hole (idiom)
枘凿
ruì záo
incompatible (abbr. for 方枘圓鑿|方枘圆凿[fang1 rui4 yuan2 zao2])