Flex.
another word for bend or crease is misshape.
Another word for saying "bend forward" is "hunch."
anoher word for bend is... warp twist kneed break joint
fold
Straight
A Zig Zag. Crouch.
Strait
bow, curve :):)
straight
for a noun for bend it is lean and for a verb it is arch for a noun for crease it is fold and for a verb it is tuck
meander
The greek for bend is λυγίσματος