altar vs trapezium

altar

noun
  • A table or similar flat-topped structure used for religious rites. 

  • A raised area around an altar in a church; the sanctuary. 

  • Any (real or notional) place where something is worshipped or sacrificed to. 

trapezium

noun
  • A quadrilateral with two sides parallel and two sides non-parallel. 

  • The trapezium bone of the wrist. 

  • A region on the ventral side of the brain, either just back of the pons Varolii, or, as in man, covered by the posterior extension of its transverse fibers. 

  • A quadrilateral with two sides parallel. 

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