title: Is there a Google API to calculate how related two terms (e.g. search terms) are?
body: <p>Is there any way to estimate the relevance between two terms as objectively as possible using any of the APIs provided by Google? This would exclude personal suggestion or "clouds" Google uses.</p>
  
  <p>Ideally I would like to get the output in json so I can plug it into C# easily.</p>
  
  <p>Thanks in advance.</p>