mandioca vs bitter cassava

mandioca and bitter cassava both are nouns.

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

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

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

mandioca (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