dark 4653 # skotia {skot-ee'-ah}; from 4655; dimness, obscurity 
(literally or figuratively): -- {dark}(-ness).[ql

 darkness 4655 # skotos {skot'-os}; from the base of 4639; 
shadiness, i.e. obscurity (literally or figuratively): -- 
{darkness}.[ql