aerialist vs sannyasi

aerialist

noun
  • A specialist in aerials, a freestyle skiing discipline. 

  • An acrobat performing high off the ground, defying a fall to earth, as on a trapeze or a tightrope. 

sannyasi

noun
  • A man in the stage of sannyasa; a wandering ascetic, a religious mendicant. 

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