Canna generalis vs canna

Canna generalis and canna both are nouns.

Word	Noun	Adjective	Verb	Adverb
Canna generalis	Yes	No	No	No
canna	Yes	No	No	No

As nouns, canna is a hypernym of Canna generalis; that is, canna is a word with a broader meaning than Canna generalis:

Canna generalis: plants grown for their large bright yellow to red flowers
canna: any plant of the genus Canna having large sheathing leaves and clusters of large showy flowers

Canna generalis (noun)	canna (noun)
plants grown for their large bright yellow to red flowers	any plant of the genus Canna having large sheathing leaves and clusters of large showy flowers