marshrutka vs sherut

marshrutka

noun
  • A share taxi in the CIS countries, the Baltic states, and Bulgaria. The role of the modern marshrutka is similar to that of the minibus in other countries, except that some implementations of marshrutka allow passengers to stand. 

sherut

noun
  • share taxi, especially in Israel 

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