unslaked lime vs calcium oxide

unslaked lime and calcium oxide both are nouns.

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

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

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

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

unslaked 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