pimpernel vs herb

pimpernel and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
pimpernel	Yes	No	No	No
herb	Yes	No	No	No

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

pimpernel: any of several plants of the genus Anagallis
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 pimpernel include herbaceous plant.

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

pimpernel: European garden herb with purple-tinged flowers and leaves that are sometimes used for salads
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 pimpernel include herbaceous plant.

pimpernel (noun)	herb (noun)
any of several plants of the genus Anagallis	aromatic potherb used in cookery for its savory qualities
European garden herb with purple-tinged flowers and leaves that are sometimes used for salads	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests