cello vs jersey

cello

noun
  • A large unfretted stringed instrument of the violin family with four strings tuned (lowest to highest) C-G-D-A and an endpin to support its weight, usually played with a bow. 

  • cellophane 

jersey

noun
  • A type of fabric knit 

  • A garment knitted from wool, worn over the upper body. 

  • A shirt worn by a member of an athletic team, usually oversized, typically depicting the athlete's name and team number as well as the team's logotype. 

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