bract vs glume

bract and glume both are nouns.

Word	Noun	Adjective	Verb	Adverb
bract	Yes	No	No	No
glume	Yes	No	No	No

As nouns, glume is a hyponym of bract; that is, glume is a word with a more specific, narrower meaning than bract:

bract: a modified leaf or leaflike part just below and protecting an inflorescence
glume: small dry membranous bract found in inflorescences of Gramineae and Cyperaceae

Other hyponyms of bract include calycle, calyculus, epicalyx, false calyx, bracteole, bractlet, spathe, involucre.

bract (noun)	glume (noun)
a modified leaf or leaflike part just below and protecting an inflorescence	small dry membranous bract found in inflorescences of Gramineae and Cyperaceae