Cloaca and Sump

Cloaca noun - (zoology) the cavity (in birds, reptiles, amphibians, most fish, and monotremes but not mammals) at the end of the digestive tract into which the intestinal, genital, and urinary tracts open.

Sump and cloaca are semantically related. In some cases you can use "Sump" instead a noun "Cloaca".

Sump noun - A well or other hole in which water has collected.

Cloaca and sump are semantically related. You can use "Cloaca" instead a noun "Sump".