piscina vs washhand-basin

piscina

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

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

washhand-basin

noun
  • Synonym of washbasin 

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