Coca
Part of speech: noun
Definition: The dried leaf of a South American shrub (Erythroxylon coca), widely cultivated legally in Andean countries, and the source of cocaine.
Cocoa
Part of speech: noun
Definition: the dried and partially fermented fatty seeds of the cacao tree from which chocolate is madean unsweetened brown powder made from roasted, ground cocoa beans, used in making chocolate, and in cooking.a hot drink made with milk, cocoa powder, and sugara cup or mug of this drinka light to medium brown colour
Part of speech: adjective
Definition: of a light to medium brown colour, like that of cocoa powder