英和和英

on both sides

both extremities

concave on both sides

convex on both sides

on both hands

both directions

both ends of something

both sides of something

either side （both sides と言うべからず）.

at both ends of a rope

both cheeks

both ends of something

match up the two ends

They stand on either side

They form a lane.［注意］“Both sides”＝双方。

both places

on both sides of the street

It is sharp at both ends.

two sides of something having a polygon shape

to play a double game―to be a double-dealer―double-hearted―double-faced

make both ends meet

both thighs

two directions

to serve two ends―subserve a double purpose―kill two birds ［two hares］with one stone

both shoulders

both shoulders

both knees

both knees

for both of them

to stand in two rows