crematorium vs cremation chamber

crematorium and cremation chamber both are nouns.

Word	Noun	Adjective	Verb	Adverb
crematorium	Yes	No	No	No
cremation chamber	Yes	No	No	No

As nouns, crematorium and cremation chamber are synonyms defined as:

crematorium and cremation chamber: a furnace where a corpse can be burned and reduced to ashes

Other synonyms of crematorium include crematory.

crematorium (noun)	cremation chamber (noun)
a furnace where a corpse can be burned and reduced to ashes	a furnace where a corpse can be burned and reduced to ashes
a mortuary where corpses are cremated