piscina vs washbowl

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. 

washbowl

noun
  • A sink in a bathroom, connected to a supply of water and a drain, in which one may wash one's face and hands. 

  • A basin for washing the face and hands; a washbasin. 

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