headlamp vs lamp

headlamp

noun
  • A flashlight worn on the head. 

  • An individual headlight, particularly of a motor vehicle. 

lamp

noun
  • A device containing oil, burnt through a wick for illumination; an oil lamp. 

  • A device that generates heat, light or other radiation. Especially an electric light bulb. 

  • A piece of furniture holding one or more electric light sockets. 

verb
  • To hunt at night using a lamp; see lamping. 

  • To make into a table lamp, said of a vase or urn, etc. 

  • To hang out or chill; to do nothing in particular. 

  • To hit, clout, belt, wallop. 

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