Revers
Revers are found on the neckline. They’re when a wide lapel is turned back to reveal the reverse or underside of fabric. A revere collar, however, is a flat v-shaped collar, often found on blouses.
Ruching
Ruching is a gathered overlay of fabric strips that are pleated, fluted, or gathered together to create a ripple-like effect. The frill or pleat of the fabric, often lace, chiffon or muslin, has evolved from the 16th century ruff.