jersey vs knitwear

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. 

knitwear

noun
  • knitted garments 

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