K vs thousand

K

character

  • The eleventh letter of the English alphabet, called kay and written in the Latin script. 

intj

  • Synonym: 'kay 

  • OK 

thousand

num

  • A numerical value equal to 1,000 = 10 × 100 = 10³ 

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