caustic lime vs hydrated lime

caustic lime and hydrated lime both are nouns.

Word	Noun	Adjective	Verb	Adverb
caustic lime	Yes	No	No	No
hydrated lime	Yes	No	No	No

As nouns, caustic lime and hydrated lime are synonyms defined as:

caustic lime and hydrated lime: a caustic substance produced by heating limestone

Other synonyms of caustic lime include calcium hydrate, calcium hydroxide, lime, lime hydrate, slaked lime.

caustic lime (noun)	hydrated lime (noun)
a caustic substance produced by heating limestone	a caustic substance produced by heating limestone