abstract
amplitude
art
black
border
brush
corrugated
curvature
curve
curvy
design
divider
edge
edgy
element
frame
geometric
graphic
horizontal
isolated
jagged
line
parallel
pattern
repeat
ripple
round
seamless
serrated
set
sharp
simple
sine
sinus
smooth
squiggle
squiggly
stroke
tile
undulate
water
wave
waveform
wavy
white
wiggle
wiggly
wriggly
zigzag