glume vs bract

glume and bract both are nouns.

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

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

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

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