herb vs seasoning

herb and seasoning both are nouns.

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

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

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

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