annual leave vs vay-cay

annual leave

noun
  • The use of such days to be away from work; on holiday or vacation. 

  • Amount of time expressed as the number of days per year that an employee is entitled to be away from work. 

vay-cay

noun
  • vacation 

How often have the words annual leave and vay-cay occurred in a corpus of books? (source: Google Ngram Viewer )