fundi vs one of the cognoscenti

fundi

noun
  • A person who repairs and maintains things; mechanic, repairer. 

  • The African cereal plant Digitaria exilis. 

  • A master of a particular skill; an expert. 

one of the cognoscenti

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