Halogeton souda vs herb

Halogeton souda and herb both are nouns.

Word	Noun	Adjective	Verb	Adverb
Halogeton souda	Yes	No	No	No
herb	Yes	No	No	No

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

Halogeton souda: Algerian plant formerly burned to obtain calcium carbonate
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 Halogeton souda include herbaceous plant.

Halogeton souda (noun)	herb (noun)
Algerian plant formerly burned to obtain calcium carbonate	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