golden handshake vs severance payment

golden handshake

noun
  • A generous severance payment, especially as an inducement to leave employment. 

severance payment

noun
  • Money that an employer pays to an employee when the employee leaves the company in case of layoffs, often in exchange for some kind of waiver. 

How often have the words golden handshake and severance payment occurred in a corpus of books? (source: Google Ngram Viewer )