cobra: venomous Asiatic and African elapid snakes that can expand the skin of the neck into a hood
elapid: any of numerous venomous fanged snakes of warmer parts of both hemispheres
stencil: a sheet of material (metal, plastic, cardboard, waxed paper, silk, etc.) that has been perforated with a pattern (printing or a design); ink or paint can pass through the perforations to create the printed pattern on the surface below