hedge pink vs flower

hedge pink and flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
hedge pink	Yes	No	No	No
flower	Yes	No	Yes	No

As nouns, flower is a hypernym of hedge pink; that is, flower is a word with a broader meaning than hedge pink:

hedge pink: plant of European origin having pink or white flowers and leaves yielding a detergent when bruised
flower: a plant cultivated for its blooms or blossoms

hedge pink (noun)	flower (noun)
plant of European origin having pink or white flowers and leaves yielding a detergent when bruised	a plant cultivated for its blooms or blossoms
	reproductive organ of angiosperm plants especially one having showy or colorful parts
	the period of greatest prosperity or productivity

hedge pink (verb)	flower (verb)
	produce or yield flowers