Diplotaxis erucoides vs herb

Diplotaxis erucoides and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
Diplotaxis erucoides	Yes	No	No	No
herb	Yes	No	No	No

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

Diplotaxis erucoides: from Mediterranean region; a naturalized weed throughout southern Europe
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 Diplotaxis erucoides include herbaceous plant.

Diplotaxis erucoides (noun)	herb (noun)
from Mediterranean region; a naturalized weed throughout southern Europe	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