astrantia vs herbaceous plant

astrantia and herbaceous plant both are nouns.

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

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

astrantia: any plant of the genus Astrantia
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 astrantia include herb.

astrantia (noun)	herbaceous plant (noun)
any plant of the genus Astrantia	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests