tramcar vs wagon

tramcar

noun
  • A rail vehicle for carrying loads in a mine; a tram. 

  • A streetcar. 

wagon

noun
  • A vehicle (wagon) designed to transport goods or people on railway. 

  • A kind of prefix used in de Bruijn notation. 

  • Buttocks. 

  • A heavier four-wheeled (normally horse-drawn) vehicle designed to carry goods (or sometimes people). 

verb
  • To load into a wagon in preparation for transportation; to transport by means of a wagon. 

  • To travel in a wagon. 

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