quicklime vs burnt lime

quicklime and burnt lime both are nouns.

Word	Noun	Adjective	Verb	Adverb
quicklime	Yes	No	No	No
burnt lime	Yes	No	No	No

As nouns, quicklime and burnt lime are synonyms defined as:

quicklime and burnt lime: a white crystalline oxide used in the production of calcium hydroxide

Other synonyms of quicklime include calcined lime, calcium oxide, calx, fluxing lime, lime, unslaked lime.

quicklime (noun)	burnt lime (noun)
a white crystalline oxide used in the production of calcium hydroxide	a white crystalline oxide used in the production of calcium hydroxide