How to sign: long thick piece of wood or metal or concrete, etc., used in construction
Categories: structural member
Within this category: box beam, cantilever, girder, header, header, joist, keel, keelson, rafter, rider plate, ridge, shore, tie, timber, trave
How to sign: a column of light (as from a beacon)
Similiar / Same: beam of light, light beam, ray, ray of light, shaft of light, irradiation, shaft
Categories: light, visible light, visible radiation
Within this category: heat ray, high beam, laser beam, low beam, moonbeam, sunbeam