chela vs protégé

chela

noun
  • A pupil or disciple, especially in Hinduism. 

  • A pincer-like claw of a crustacean or arachnid. 

protégé

noun
  • A person who is guided and supported by an older and more experienced person (a protector or mentor). 

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