chest vs pyx

chest

noun
  • A box, now usually a large strong box with a secure convex lid. 

  • A hit or blow made with one's chest. 

  • A chest of drawers. 

  • The place in which public money is kept; a treasury. 

  • The portion of the front of the human body from the base of the neck to the top of the abdomen; the thorax. Also the analogous area in other animals. 

  • Debate; quarrel; strife; enmity. 

verb
  • To hit with one's chest (front of one's body) 

  • To deposit in a chest. 

pyx

noun
  • A (small) box; a casket, a coffret. 

  • A box used in a mint as a place to deposit sample coins intended to have the fineness of their metal and their weight tested before the coins are issued to the public. 

  • A small, usually round container used to hold the host (“consecrated bread or wafer of the Eucharist”), especially when bringing communion to the sick or others unable to attend Mass. 

verb
  • To enclose (something) in a box or other container; specifically, to place (a deceased person's body) in a coffin; to coffin, to encoffin. 

  • To deposit (sample coins) in a pyx; (by extension) to test (such coins) for the fineness of metal and weight before a mint issues them to the public. 

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