insight vs understanding

insight

noun
  • Knowledge (usually derived from consumer understanding) that a company applies in order to make a product or brand perform better and be more appealing to customers 

  • A sight or view of the interior of anything; a deep inspection or view; introspection; frequently used with into. 

  • Intuitive apprehension of the inner nature of a thing or things; intuition. 

  • An extended understanding of a subject resulting from identification of relationships and behaviors within a model, context, or scenario. 

  • Power of acute observation and deduction 

  • An individual's awareness of the nature and severity of one's mental illness. 

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 insight and understanding occurred in a corpus of books? (source: Google Ngram Viewer )