sewerage vs cloaca

sewerage and cloaca both are nouns.

Word	Noun	Adjective	Verb	Adverb
sewerage	Yes	No	No	No
cloaca	Yes	No	No	No

As nouns, sewerage and cloaca are synonyms defined as:

sewerage and cloaca: a waste pipe that carries away sewage or surface water

Other synonyms of sewerage include sewer.

sewerage (noun)	cloaca (noun)
a waste pipe that carries away sewage or surface water	a waste pipe that carries away sewage or surface water
waste matter carried away in sewers or drains	(zoology) the cavity (in birds, reptiles, amphibians, most fish, and monotremes but not other mammals) at the end of the digestive tract into which the intestinal, genital, and urinary tracts open