Lycopus europaeus vs herb

Lycopus europaeus and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lycopus europaeus	Yes	No	No	No
herb	Yes	No	No	No

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

Lycopus europaeus: hairy Eurasian herb with two-lipped 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 Lycopus europaeus include herbaceous plant.

Lycopus europaeus (noun)	herb (noun)
hairy Eurasian herb with two-lipped 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