kiln vs limekiln

kiln and limekiln both are nouns.

Word	Noun	Adjective	Verb	Adverb
kiln	Yes	No	No	No
limekiln	Yes	No	No	No

As nouns, limekiln is a hyponym of kiln; that is, limekiln is a word with a more specific, narrower meaning than kiln:

kiln: a furnace for firing or burning or drying such things as porcelain or bricks
limekiln: a kiln used to reduce naturally occurring forms of calcium carbonate to lime

Other hyponyms of kiln include brickkiln, dry kiln, muffle, oast.

kiln (noun)	limekiln (noun)
a furnace for firing or burning or drying such things as porcelain or bricks	a kiln used to reduce naturally occurring forms of calcium carbonate to lime