banking vs savings bank

banking

noun
  • Investment banking. 

  • The occupation of managing or working in a bank. 

  • The practice of assisting a train up a steep incline (called a bank) with another locomotive at the rear. 

  • The business of managing a bank. 

  • A horizontal turn. 

  • A mechanical component to prevent vibration in a timepiece, etc. 

savings bank

noun
  • A type of financial institution that focuses on retail banking: savings of private depositors, payments, credits and insurances for individuals or small and medium-sized enterprises. 

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