burnt lime vs unslaked lime

burnt lime and unslaked lime both are nouns.

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

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

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

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

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