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n.
relative darkness caused by light rays being intercepted by an opaque body; "it is much cooler in the shade"; "there's too much shadiness to take good photographs"
n.
a subtle difference in meaning or opinion or attitude; "without understanding the finer nuances you can't enjoy the humor"; "don't argue about shades of meaning"
n.
relative darkness or lightness of a color; "I establish the colors and principal values by organizing the painting into three values--dark, medium...and light"-Joe Hing Lowe