false calyx vs bract

false calyx and bract both are nouns.

Word	Noun	Adjective	Verb	Adverb
false calyx	Yes	No	No	No
bract	Yes	No	No	No

As nouns, bract is a hypernym of false calyx; that is, bract is a word with a broader meaning than false calyx:

false calyx: a group of bracts simulating a calyx as in a carnation or hibiscus
bract: a modified leaf or leaflike part just below and protecting an inflorescence

false calyx (noun)	bract (noun)
a group of bracts simulating a calyx as in a carnation or hibiscus	a modified leaf or leaflike part just below and protecting an inflorescence