camphor dune tansy vs herb

camphor dune tansy and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
camphor dune tansy	Yes	No	No	No
herb	Yes	No	No	No

As nouns, herb is a hypernym of camphor dune tansy; that is, herb is a word with a broader meaning than camphor dune tansy:

camphor dune tansy: densely hairy plant with rayless flowers; San Francisco Bay area
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 camphor dune tansy include herbaceous plant.

camphor dune tansy (noun)	herb (noun)
densely hairy plant with rayless flowers; San Francisco Bay area	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