abstract
backdrop
background
black
border
cartography
chart
concept
contour
country
cut
decorative
design
diagonal
geographic
geography
geometric
graphic
icon
illustration
isolated
line
lineal
linear
lined
lines
map
nation
oblique
outline
parallel
pattern
puerto
rico
sign
silhouette
skew
slanting
straight
striped
symbol
texture
thin
topographic
travel
united
white
world