herb vs flavoring

herb and flavoring both are nouns.

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

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

Other hypernyms of herb include flavorer, flavourer, flavouring, seasoner, seasoning.

herb (noun)	flavoring (noun)
aromatic potherb used in cookery for its savory qualities	something added to food primarily for the savor it imparts
a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests