calcined lime vs calcium oxide

calcined lime and calcium oxide both are nouns.

Word	Noun	Adjective	Verb	Adverb
calcined lime	Yes	No	No	No
calcium oxide	Yes	No	No	No

As nouns, calcined lime and calcium oxide are synonyms defined as:

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

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

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