sand devil's claw vs herb

sand devil's claw and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
sand devil's claw	Yes	No	No	No
herb	Yes	No	No	No

As nouns, herb is a hypernym of sand devil's claw; that is, herb is a word with a broader meaning than sand devil's claw:

sand devil's claw: alternatively placed in genus Martynia
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 sand devil's claw include herbaceous plant.

sand devil's claw (noun)	herb (noun)
alternatively placed in genus Martynia	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