1) Angular shape 2) Angularity 3) Bend 4) Crease 5) Crimp 6) Flexure 7) Fold 8) Folding in parallel folds 1) Crease 2) Crimp 3) Fold 4) Kink 5) Pleat 6) Pleating 7) Pucker 8) Twirl 
the act of folding
• (n.) A folding or fold; a plait.
A folding or putting together in pleats; specifically, an operation for reducing the size of a hollow viscus by taking folds or tucks in its walls. ... Origin: L. Plico, pp. -atus, to fold ... (05 Mar 2000) ... 
(pli-ka´shәn) the operation of taking tucks in a structure to shorten it.
Pli·ca'tion noun A folding or fold; a plait. Richardson. 
Type: Term Pronunciation: plī-kā′shŭn, pli- Definitions: 1. A folding or putting together in pleats; specifically, an operation for reducing the size of a hollow viscus by taking folds or tucks in its walls.
[n] - folding in parallel folds
pleating noun folding in parallel folds