flowering glume vs glume

flowering glume and glume both are nouns.

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

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

flowering glume: the lower and stouter of the two glumes immediately enclosing the floret in most Gramineae
glume: small dry membranous bract found in inflorescences of Gramineae and Cyperaceae

flowering glume (noun)	glume (noun)
the lower and stouter of the two glumes immediately enclosing the floret in most Gramineae	small dry membranous bract found in inflorescences of Gramineae and Cyperaceae