floodlight vs street lamp

floodlight

noun
  • A projector of a bright beam of light for use in theatres and studios; a flood 

  • Powerful artificial illumination with a broad beam, especially in a series of units on pylons used to illuminate a sports ground. 

verb
  • To enlighten or illuminate with floodlight(s). 

street lamp

noun
  • Streetlight. 

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