T-shirt vs jersey

T-shirt

noun
  • A lightweight shirt without buttons, usually with short sleeves and no collar. Often made of cotton and frequently bears a picture or slogan. 

jersey

noun
  • 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. 

  • A type of fabric knit 

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