- kola nut, cola nut - bitter brown seed containing caffein; source of cola extract
--1 is a kind of nut
--1 is a part of
--1 is a substance of cola, dopekola, kola nut, kola nut tree, goora nut, Cola acuminata - kola, kola nut, kola nut tree, goora nut, Cola acuminata - tree bearing large brown nuts containing e.g. caffeine; source of cola extract
--2 is a kind of nut tree
--2 is a member of Cola, genus Cola
--2 has parts: kola nut, cola nut
--2 has substances: cola extract