piscina vs scupper

piscina

noun
  • A drained basin near a church's altar for the disposal of water from liturgical ablutions. 

  • A basin or tank, especially one for holding fishes or for growing aquatic plants. 

scupper

noun
  • A similar opening in a wall or parapet that allows water to drain from a roof. 

  • A drainage hole on the deck of a ship. 

verb
  • Thwart or destroy, especially something belonging or pertaining to another. 

How often have the words piscina and scupper occurred in a corpus of books? (source: Google Ngram Viewer )