Arnoseris minima vs herb

Arnoseris minima and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arnoseris minima	Yes	No	No	No
herb	Yes	No	No	No

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

Arnoseris minima: small European herb with small yellow flowers
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 Arnoseris minima include herbaceous plant.

Arnoseris minima (noun)	herb (noun)
small European herb with small yellow flowers	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