license vs red light

license

verb
  • To give permission or freedom to; accept. 

  • To authorize officially. 

  • To acquire authorization to use, usually in exchange for compensation. 

  • To permit (as grammatically correct). 

  • To give formal authorization to use. 

noun
  • The legal terms under which a person is allowed to use a product, especially software. 

  • A legal document giving official permission to do something; a permit. 

  • Freedom to deviate deliberately from normally applicable rules or practices (especially in behaviour or speech). 

  • Excessive freedom; lack of due restraint. 

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. 

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