fennel vs herb

fennel and herb both are nouns.

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

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

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

fennel: any of several aromatic herbs having edible seeds and leaves and stems
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 fennel include herbaceous plant.

fennel (noun)	herb (noun)
fennel seeds are ground and used as a spice or as an ingredient of a spice mixture	aromatic potherb used in cookery for its savory qualities
leaves used for seasoning	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
aromatic bulbous stem base eaten cooked or raw in salads
any of several aromatic herbs having edible seeds and leaves and stems