Myrrhis odorata vs herb

Myrrhis odorata and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
Myrrhis odorata	Yes	No	No	No
herb	Yes	No	No	No

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

Myrrhis odorata: European herb with soft ferny leaves and white 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 Myrrhis odorata include herbaceous plant.

Myrrhis odorata (noun)	herb (noun)
European herb with soft ferny leaves and white 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