brains vs understanding

brains

noun
  • The intelligent person or people in a group: the director, planner, administrator, etc. 

  • The substance of a brain, as a material or foodstuff. 

  • The figurative substance of a brain: mental ability, intelligence. 

understanding

noun
  • Reason or intelligence, ability to grasp the full meaning of knowledge, ability to infer. 

  • Opinion, judgement or outlook. 

  • An informal contract; mutual agreement. 

  • A reconciliation of differences. 

  • The act of one that understands or comprehends; comprehension; knowledge; discernment. 

  • Sympathy. 

adj
  • Showing compassion, tolerance, and forbearance. 

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