bitter cassava vs mandioca

bitter cassava and mandioca both are nouns.

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

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

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

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

bitter cassava (noun)	mandioca (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