sugarloaf vs loaf sugar

sugarloaf and loaf sugar both are nouns.

Word	Noun	Adjective	Verb	Adverb
sugarloaf	Yes	No	No	No
loaf sugar	Yes	No	No	No

As nouns, sugarloaf and loaf sugar are synonyms defined as:

sugarloaf and loaf sugar: a large conical loaf of concentrated refined sugar

Other synonyms of sugarloaf include sugar loaf.

sugarloaf (noun)	loaf sugar (noun)
a large conical loaf of concentrated refined sugar	a large conical loaf of concentrated refined sugar