cane reed vs giant cane

cane reed and giant cane both are nouns.

Word	Noun	Adjective	Verb	Adverb
cane reed	Yes	No	No	No
giant cane	Yes	No	No	No

As nouns, cane reed and giant cane are synonyms defined as:

cane reed and giant cane: tall grass of southern United States growing in thickets

Other synonyms of cane reed include Arundinaria gigantea.

cane reed (noun)	giant cane (noun)
tall grass of southern United States growing in thickets	tall grass of southern United States growing in thickets