Manihot utilissima vs casava

Manihot utilissima and casava both are nouns.

Word	Noun	Adjective	Verb	Adverb
Manihot utilissima	Yes	No	No	No
casava	Yes	No	No	No

As nouns, casava is a hypernym of Manihot utilissima; that is, casava is a word with a broader meaning than Manihot utilissima:

Manihot utilissima: cassava with long tuberous edible roots and soft brittle stems; used especially to make cassiri (an intoxicating drink) and tapioca
casava: any of several plants of the genus Manihot having fleshy roots yielding a nutritious starch

Other hypernyms of Manihot utilissima include cassava.

Manihot utilissima (noun)	casava (noun)
cassava with long tuberous edible roots and soft brittle stems; used especially to make cassiri (an intoxicating drink) and tapioca	any of several plants of the genus Manihot having fleshy roots yielding a nutritious starch