surface
the outside part or uppermost layer of something

see another keyword links:
out

side

layer

the surface, exterior

surface, side, plane
face of a person

surface
appearance
externally
outwardly
on the surface

area
measure of area

stripes
streaks
relatively long, narrow bands
of a different color

wall
surface of wall

concave
dented, sunken

convex
bulge out
protruding, raised

flat
having a level surface

horizon
the line at which the earth's surface
and the sky appear to meet

parallel
(of lines, planes, or surfaces)
side by side and having the same
distance continuously between them

angled edge
an edge formed by two meeting surfaces