baldachin: ornamented canopy supported by columns or suspended from a roof or projected from a wall (as over an altar)
canopy: a covering (usually of cloth) that serves as a roof to shelter an area from the weather
radiation sickness: syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours