autorickshaw vs three-wheeler

autorickshaw

noun
  • A motorized rickshaw of South Asia and East Asia, often available for hire in the manner of a taxi. 

three-wheeler

noun
  • An autorickshaw, tuk-tuk, trishaw. 

  • A car, cycle or motorbike having three wheels. 

How often have the words autorickshaw and three-wheeler occurred in a corpus of books? (source: Google Ngram Viewer )