Cape dagga vs herbaceous plant

Cape dagga and herbaceous plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cape dagga	Yes	No	No	No
herbaceous plant	Yes	No	No	No

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

Cape dagga: relatively nontoxic South African herb smoked like tobacco
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 Cape dagga include herb.

Cape dagga (noun)	herbaceous plant (noun)
relatively nontoxic South African herb smoked like tobacco	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests