title: Check for abbreviations in a pandas dataframe column
body: <p>how can the abbreviations behind words be identified and counted most efficiently and entered into a new column, but only if they are correct.</p>
  
  <p>Desired output:</p>
  
  <pre><code>|-------Name---------------------------||-Count-|
  This is Ante Meridian (AM) not included||   3   |         
  This is Ante Meridian (AM)     included||   3   |     
  This is Ante Meridian (AM) not included||   3   |     
  Extra module with Post Meridian (PM)   ||   1   |     
  Post Meridian (PO) is not available    ||   0   |  #Mismatch   
  </code></pre>