Olivil :: Olivil (n.) A white crystalline substance, obtained from an exudation from the olive, and having a bitter-sweet taste and acid proporties..
Olivin :: Olivin (n.) A complex bitter gum, found on the leaves of the olive tree; -- called also olivite..
Olivine :: Olivine (n.) A common name of the yellowish green mineral chrysolite, esp. the variety found in eruptive rocks..