cilantro vs herbaceous plant

cilantro and herbaceous plant both are nouns.

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

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

cilantro: Old World herb with aromatic leaves and seed resembling parsley
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 cilantro include herb.

cilantro (noun)	herbaceous plant (noun)
parsley-like herb used as seasoning or garnish	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
Old World herb with aromatic leaves and seed resembling parsley