#illumination  the degree of visibility of your environment
  supertype:  state  the way something is with respect to its main attributes; "the current state of knowledge"; "his state of health"; "in a weak financial state"
  subtype:  light.illumination__lighting  having abundant light or illumination: "they played as long as it was light" or "as long as the lighting was good"
  subtype:  dark__darkness  absence of light or illumination
     subtype:  night.dark  darkness; "it vanished into the night"
     subtype:  total_darkness__lightlessness__lightlessnes__blacknes__pitchblacknes__black  total absence of light; "they fumbled around in total darkness"; "in the black of night"
     subtype:  brownout__blackout__dimout  darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)
     subtype:  semidarkness  partial darkness
        subtype:  cloudiness__overcast  gloomy semidarkness caused by cloud cover
        subtype:  dusk__twilight  a state of diffused or dim illumination
        subtype:  shadiness__shadines__shadowiness__shadowines  relative darkness caused by light rays being intercepted by an opaque body
           subtype:  shadow  shade within clear boundaries
              subtype:  umbra  a region of complete shadow resulting from total obstruction of light
              subtype:  penumbra  a fringe region of partial shadow around an umbra
        subtype:  duskiness__duskines__dimnes  the state of being poorly illuminated
        subtype:  sombreness__gloom__somberness  a state of partial or total darkness; "he struck a match to dispell the gloom"
        subtype:  obscurity.semidarkness__obscureness  the state of being indistinct or indefinite for lack of adequate illumination

No statement uses or specializes illumination; click here to add one.