banking vs descent

banking

noun
  • A horizontal turn. 

  • 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. 

  • Investment banking. 

  • The business of managing a bank. 

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

descent

noun
  • A sloping passage or incline. 

  • A particular extension of the idea of gluing. 

  • A falling upon or invasion. 

  • A drop to a lower status or condition; decline. 

  • Lineage or hereditary derivation. 

  • An instance of descending; act of coming down. 

  • A way down. 

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