orach vs herbaceous plant

orach and herbaceous plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
orach	Yes	No	No	No
herbaceous plant	Yes	No	No	No

As nouns, herbaceous plant is a hypernym of orach; that is, herbaceous plant is a word with a broader meaning than orach:

orach: any of various herbaceous plants of the genus Atriplex that thrive in deserts and salt marshes
herbaceous plant: a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

Other hypernyms of orach include herb.

orach (noun)	herbaceous plant (noun)
any of various herbaceous plants of the genus Atriplex that thrive in deserts and salt marshes	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests