dervish vs yogi

dervish

noun
  • Any irregular guerrilla fighter resembling the Sudanese Mahdi in equipment, uniform, tactics, etc. 

  • A citizen or inhabitant of Darawiish (circa 1895–1920 C.E.), an anti-colonial polity in modern Somalia headed by Sufis. 

  • One of the followers of Muhammad Ahmad, the Mahdi of the Sudan, in the 1880s. 

yogi

noun
  • A devotee or adherent of yoga. 

verb
  • To persuade someone to give you food or other favors without actually begging. 

  • To turn (someone) into a yogi; to lead into practicing yoga. 

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