floodlight vs headlamp

floodlight

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

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

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

headlamp

noun
  • An individual headlight, particularly of a motor vehicle. 

  • A flashlight worn on the head. 

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