networking vs tit for tat

networking

noun
  • The process of meeting new people in a business or social context. 

  • The use of computer networks. 

tit for tat

noun
  • Equivalent retribution; an act of returning exactly what one gets; an eye for an eye. 

  • A hat. 

How often have the words networking and tit for tat occurred in a corpus of books? (source: Google Ngram Viewer )