rue vs herb

rue and herb both are nouns.

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

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

rue: leaves sometimes used for flavoring fruit or claret cup but should be used with great caution: can cause irritation like poison ivy
herb: aromatic potherb used in cookery for its savory qualities

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

rue: European strong-scented perennial herb with grey-green bitter-tasting leaves; an irritant similar to poison ivy
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 rue include herbaceous plant.

rue (noun)	herb (noun)
(French) a street or road in France	aromatic potherb used in cookery for its savory qualities
sadness associated with some wrong done or some disappointment	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
leaves sometimes used for flavoring fruit or claret cup but should be used with great caution: can cause irritation like poison ivy
European strong-scented perennial herb with grey-green bitter-tasting leaves; an irritant similar to poison ivy

rue (verb)	herb (verb)
feel remorse for; feel sorry for; be contrite about