gypsywort vs herb

gypsywort and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
gypsywort	Yes	No	No	No
herb	Yes	No	No	No

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

gypsywort: 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 gypsywort include herbaceous plant.

gypsywort (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