Tanacetum camphoratum vs herb

Tanacetum camphoratum and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tanacetum camphoratum	Yes	No	No	No
herb	Yes	No	No	No

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

Tanacetum camphoratum: 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 Tanacetum camphoratum include herbaceous plant.

Tanacetum camphoratum (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