demerara vs rum

demerara and rum both are nouns.

Word	Noun	Adjective	Verb	Adverb
demerara	Yes	No	No	No
rum	Yes	Yes	No	No

As nouns, rum is a hypernym of demerara; that is, rum is a word with a broader meaning than demerara:

demerara (noun)	rum (noun)
light brown cane sugar; originally from Guyana	a card game based on collecting sets and sequences; the winner is the first to meld all their cards
dark rum from Guyana	liquor distilled from fermented molasses
a light brown raw cane sugar from Guyana

demerara (adjective)	rum (adjective)
	beyond or deviating from the usual or expected