giant cane vs bamboo

giant cane and bamboo both are nouns.

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

As nouns, bamboo is a hypernym of giant cane; that is, bamboo is a word with a broader meaning than giant cane:

giant cane: tall grass of southern United States growing in thickets
bamboo: woody tropical grass having hollow woody stems; mature canes used for construction and furniture

giant cane (noun)	bamboo (noun)
tall grass of southern United States growing in thickets	woody tropical grass having hollow woody stems; mature canes used for construction and furniture
	the hard woody stems of bamboo plants; used in construction and crafts and fishing poles