globeflower vs herb

globeflower and herb both are nouns.

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

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

globeflower: any of several plants of the genus Trollius having globose 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 globeflower include herbaceous plant.

globeflower (noun)	herb (noun)
any of several plants of the genus Trollius having globose 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