floral envelope vs flower

floral envelope and flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
floral envelope	Yes	No	No	No
flower	Yes	No	Yes	No

floral envelope (noun)	flower (noun)
collective term for the outer parts of a flower consisting of the calyx and corolla and enclosing the stamens and pistils	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

floral envelope (verb)	flower (verb)
	produce or yield flowers