centaury vs flower

centaury and flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
centaury	Yes	No	No	No
flower	Yes	No	Yes	No

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

centaury (noun)	flower (noun)
any plant of the genus Centaurea	a plant cultivated for its blooms or blossoms
any of various plants of the genus Centaurium	reproductive organ of angiosperm plants especially one having showy or colorful parts
	the period of greatest prosperity or productivity

centaury (verb)	flower (verb)
	produce or yield flowers