pteropogon vs herbaceous plant

pteropogon and herbaceous plant both are nouns.

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

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

pteropogon: southern Australian plant having feathery hairs surrounding the fruit
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 pteropogon include herb.

pteropogon (noun)	herbaceous plant (noun)
southern Australian plant having feathery hairs surrounding the fruit	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests