lyreflower vs herb

lyreflower and herb both are nouns.

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

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

lyreflower: garden plant having deep-pink drooping heart-shaped flowers
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 lyreflower include herbaceous plant.

lyreflower (noun)	herb (noun)
garden plant having deep-pink drooping heart-shaped flowers	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