dittany vs herbaceous plant

dittany and herbaceous plant both are nouns.

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

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

dittany: Eurasian perennial herb with white flowers that emit flammable vapor in hot weather
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 dittany include herb.

dittany (noun)	herbaceous plant (noun)
Eurasian perennial herb with white flowers that emit flammable vapor in hot weather	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests