gyral vs revolving

gyral

adj
  • Moving circularly or spirally; gyratory; whirling. 

  • Of or pertaining to a gyrus 

revolving

adj
  • moving around a central point. 

  • Relating to an account or line of credit where balances and credit roll over from one billing cycle to the next, such as a credit card. 

noun
  • The act of something that revolves or turns. 

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