Synonyms for Cassava (same or very similar meaning)
WordNet sense 1 (a starch made by leaching and drying the root of the cassava plant; the source of tapioca; a staple food in the tropics):
manioc, manioca, cassava starch
WordNet sense 2 (any of several plants of the genus Manihot having fleshy roots yielding a nutritious starch):
casava
From the ODE community, based on WordNet
add/edit