辺

lower side; lower edge; lower border; lower hem

Mathematics

left side (of an equation, expression, etc.); LHS

left side (go, chess, othello board)

long sides of a rectangle

around one's lips

edge; relative; relations; border

seacoast

Formal or literary term

where

Geometry

quadrilateral; quadrangle; tetragon

both sides

infinite; boundless

outskirts; periphery; environs

Geometry

hypotenuse; oblique line

edge of a swamp

remote place

limbic system

government or official circles; official quarters

public ceremonies; public affairs

lower classes; proletariat; underclass

vicinity of a hill

Computing

left side value (of an equation)

equal sides

unequal sides

high in the sky; highest heaven

near a desk