Proboscidea fragrans vs herb

Proboscidea fragrans and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
Proboscidea fragrans	Yes	No	No	No
herb	Yes	No	No	No

As nouns, herb is a hypernym of Proboscidea fragrans; that is, herb is a word with a broader meaning than Proboscidea fragrans:

Proboscidea fragrans: a herbaceous plant of the genus Proboscidea
herb: a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

Other hypernyms of Proboscidea fragrans include herbaceous plant.

Proboscidea fragrans (noun)	herb (noun)
a herbaceous plant of the genus Proboscidea	aromatic potherb used in cookery for its savory qualities
	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests