over-burned lime vs slaked lime

over-burned lime and slaked lime both are nouns.

Word	Noun	Adjective	Verb	Adverb
over-burned lime	Yes	No	No	No
slaked lime	Yes	No	No	No

As nouns, slaked lime is a hypernym of over-burned lime; that is, slaked lime is a word with a broader meaning than over-burned lime:

over-burned lime: An over-burned lime (also called oveburned lime, or sometimes dead-burned lime and deadburned lime) is a lime that has been fired above 1,100° C, thus loosing its reactivity, which leads to poor or no bond strength.
slaked lime: a caustic substance produced by heating limestone

Other hypernyms of over-burned lime include calcium hydrate, calcium hydroxide, caustic lime, hydrated lime, lime, lime hydrate.

over-burned lime (noun)	slaked lime (noun)
An over-burned lime (also called oveburned lime, or sometimes dead-burned lime and deadburned lime) is a lime that has been fired above 1,100° C, thus loosing its reactivity, which leads to poor or no bond strength.	a caustic substance produced by heating limestone