shellac: lac purified by heating and filtering; usually in thin orange or yellow flakes but sometimes bleached white
lac: resinlike substance secreted by certain lac insects; used in e.g. varnishes and sealing wax
geoduck: a large edible clam found burrowing deeply in sandy mud along the Pacific coast of North America; weighs up to six pounds; has siphons that can extend to several feet and cannot be withdrawn into the shell