guernsey vs knitwear

guernsey

noun
  • A seaman's knitted woolen sweater, similar to a jersey. 

  • The shirt worn by the players. 

  • (slang: as in "get a guernsey") [receive] praise, admiration, recognition, credit, etc 

knitwear

noun
  • knitted garments 

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