dayflower vs herbaceous plant

dayflower and herbaceous plant both are nouns.

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

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

dayflower: any plant of the family Commelinaceae
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 dayflower include herb.

dayflower (noun)	herbaceous plant (noun)
any plant of the family Commelinaceae	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests