bitter cassava vs mandioc

bitter cassava and mandioc both are nouns.

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

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

bitter cassava and mandioc: 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, mandioca, Manihot esculenta, Manihot utilissima, manioc, tapioca plant.

bitter cassava (noun)	mandioc (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