jeepney vs taxibus

jeepney

noun
  • A vehicle used as public transport in the Philippines, originally made from US military Jeeps left over from World War II and well known for their flamboyant decoration and crowded seating. 

taxibus

noun
  • A small bus that operates without a timetable, departing when sufficiently full 

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