rickshaw vs tuk-tuk

rickshaw

noun
  • A two-wheeled carriage pulled along by a person. 

verb
  • To move someone by means of a rickshaw. 

tuk-tuk

noun
  • A motorized rickshaw, especially Southeast Asia or India. 

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