red light vs withholding

red light

noun
  • A warning light, especially as a traffic signal indicating stop. 

  • Denial to proceed; a ruling out of any possibility. 

  • A sign of a brothel. 

withholding

noun
  • The deduction of taxes from an employee's salary. 

  • The tax so deducted, and paid to local or national government. 

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