Thus the traditional clerical dress received its initial form: the alb, the long white undergarment; the tunicle, reserved today for the dress of deacons; and the chasuble, the sleeveless outer garment worn by the celebrant of the Eucharist.
A cape is a sleeveless long outergarment that covers only the back half, whilst ponchos are long piece outerwear pieces that are loose - fitted and cover your torso from the back to the front side.