canna vs herbaceous plant

canna and herbaceous plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
canna	Yes	No	No	No
herbaceous plant	Yes	No	No	No

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

canna: any plant of the genus Canna having large sheathing leaves and clusters of large showy flowers
herbaceous plant: a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

Other hypernyms of canna include herb.

canna (noun)	herbaceous plant (noun)
any plant of the genus Canna having large sheathing leaves and clusters of large showy flowers	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests