headlamp vs torchlight

headlamp

noun
  • A flashlight worn on the head. 

  • An individual headlight, particularly of a motor vehicle. 

torchlight

noun
  • The light produced by a flashlight. 

  • The dim light produced by a burning torch. 

  • A torch or flashlight. 

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