bract vs spathe

bract and spathe both are nouns.

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

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

bract: a modified leaf or leaflike part just below and protecting an inflorescence
spathe: a conspicuous bract surrounding or subtending a spadix or other inflorescence

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

bract (noun)	spathe (noun)
a modified leaf or leaflike part just below and protecting an inflorescence	a conspicuous bract surrounding or subtending a spadix or other inflorescence