flower vs perianth

flower and perianth both are nouns.

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

flower (noun)	perianth (noun)
a plant cultivated for its blooms or blossoms	collective term for the outer parts of a flower consisting of the calyx and corolla and enclosing the stamens and pistils
reproductive organ of angiosperm plants especially one having showy or colorful parts
the period of greatest prosperity or productivity

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