Joe-Pye weed vs herb

Joe-Pye weed and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
Joe-Pye weed	Yes	No	No	No
herb	Yes	No	No	No

As nouns, herb is a hypernym of Joe-Pye weed; that is, herb is a word with a broader meaning than Joe-Pye weed:

Joe-Pye weed: North American herb having whorled leaves and terminal clusters of small pinkish or purple flower heads
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 Joe-Pye weed include herbaceous plant.

As nouns, herb is a hypernym of Joe-Pye weed; that is, herb is a word with a broader meaning than Joe-Pye weed:

Joe-Pye weed: North American herb having whorled leaves and terminal clusters of flowers spotted with purple
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 Joe-Pye weed include herbaceous plant.

Joe-Pye weed (noun)	herb (noun)
North American herb having whorled leaves and terminal clusters of small pinkish or purple flower heads	aromatic potherb used in cookery for its savory qualities
North American herb having whorled leaves and terminal clusters of flowers spotted with purple	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests