Pleat
Part of speech: verb
Definition: To form one or more pleats in a piece of fabric or a garment.
Part of speech: noun
Definition: A fold in the fabric of a garment, as a part of the design of the garment, with the purpose of adding controlled fullness or taking up excess fabric. There are many types of pleats, differing in their construction and appearance. A plait.
Ruffle
Part of speech: verb
Definition: To make a ruffle in; to curl or flute, as an edge of fabric.To disturb ; especially, to cause to flutter.
Part of speech: noun
Definition: Any gathered or curled strip of fabric added as trim or decoration.