steam generator vs stove

steam generator

noun
  • a type of boiler fitted in a diesel locomotive or another rail vehicle, which provided steam heating in steam-heated passenger trains that had previously been hauled by steam locomotives. 

stove

noun
  • A heater, a closed apparatus to burn fuel for the warming of a room. 

  • A hothouse (heated greenhouse). 

  • A stovetop, with hotplates. 

  • A device for heating food, (UK) a cooker. 

verb
  • To keep warm, in a house or room, by artificial heat. 

  • To heat or dry, as in a stove. 

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