bight

As nouns the difference between eight and bight

is that eight is the digit/figure 8 or eight can be an island in a river; an ait while bight is a corner, bend, or angle; a hollow; as, the bight of a horse's knee; the bight of an elbow.

As a numeral eight

is (cardinal) a numerical value equal to ; the number occurring after seven and before nine.

As nouns the difference between bight and shiny

is that bight is a corner, bend, or angle; a hollow; as, the bight of a horse's knee; the bight of an elbow while shiny is (informal) anything shiny; a trinket.

As an adjective shiny is

reflecting light.