pyrola vs herbaceous plant

pyrola and herbaceous plant both are nouns.

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

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

pyrola: any of several evergreen perennials of the genus Pyrola
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 pyrola include herb.

pyrola (noun)	herbaceous plant (noun)
any of several evergreen perennials of the genus Pyrola	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests