cane sugar vs demerara

cane sugar and demerara both are nouns.

Word	Noun	Adjective	Verb	Adverb
cane sugar	Yes	No	No	No
demerara	Yes	No	No	No

As nouns, demerara is a hyponym of cane sugar; that is, demerara is a word with a more specific, narrower meaning than cane sugar:

cane sugar (noun)	demerara (noun)
sugar from sugarcane used as sweetening agent	light brown cane sugar; originally from Guyana
sucrose obtained from sugar cane	dark rum from Guyana
	a light brown raw cane sugar from Guyana