Synonyms for Kola Nut (same or very similar meaning)
WordNet sense 1 (bitter brown seed containing caffein; source of cola extract):
cola nutWordNet sense 2 (tree bearing large brown nuts containing e.g. caffeine; source of cola extract):
kola, Cola acuminata, goora nut, kola nut treeFrom the ODE community, based on WordNetadd/edit