light

<glazing> single glazed opening in a door, window sash or structure for the admission of light
See also: borrowed light; fanlight; fixed light; laylight; leadlight; pavement light; rooflight; skylight; wing window

<illumination> illuminating agent or source, such as the sun or a lamp
See also: downlight; floodlight; spotlight
<visible> electromagnetic radiation to which the human eye reacts, ranging in wavelength from 380 to 780 nanometres (nm)
See also: daylight; quality of lighting; ultra-violet light