mandioc vs bitter cassava

mandioc and bitter cassava both are nouns.

Word	Noun	Adjective	Verb	Adverb
mandioc	Yes	No	No	No
bitter cassava	Yes	No	No	No

As nouns, mandioc and bitter cassava are synonyms defined as:

mandioc and bitter cassava: cassava with long tuberous edible roots and soft brittle stems; used especially to make cassiri (an intoxicating drink) and tapioca

Other synonyms of mandioc include gari, mandioca, Manihot esculenta, Manihot utilissima, manioc, tapioca plant.

mandioc (noun)	bitter cassava (noun)
cassava with long tuberous edible roots and soft brittle stems; used especially to make cassiri (an intoxicating drink) and tapioca	cassava with long tuberous edible roots and soft brittle stems; used especially to make cassiri (an intoxicating drink) and tapioca