title: Counting word frequency
body: <p>I am trying to sum the frequency of the words cumulatively in PostgreSQL</p>
  <p>Here's my table (example)<br/><img src="https://i.stack.imgur.com/2ZEnt.png" alt="1" /></p>
  <p>I need sum accumulative <code>frequency</code> for same words, for example the expected results is:</p>
  <blockquote>
  <p><strong>resize (100 + 85) = 185</strong></p>
  <p><strong>trabajar (75 + 73) = 148</strong></p>
  <p><strong>partir (64) = 64</strong></p>
  </blockquote>
  <p>How can I make the query?</p>