globe flower vs herb

globe flower and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
globe flower	Yes	No	No	No
herb	Yes	No	No	No

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

globe flower: 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 globe flower include herbaceous plant.

globe flower (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