title: Find similar words within a variable in R
body: <p>Let's say I have a variable that contains the following words</p>
  
  <pre><code>ChicKen120
  Chicken1.20
  Chicken(1.20)
  Cow
  cow.
  cow/
  cat
  </code></pre>
  
  <ol>
  <li>How do I find similar words that only vary by one or two characters? </li>
  </ol>
  
  <p>I realise that I could do 
  <code>grep("chicken", df$words, ignore.case=T)</code> to find all words similar to chicken, but it will be tedious to run this through every word, i.e. first chicken, then cow, then cat..</p>
  
  <p>Is there a way to find similar words within the whole column? </p>
  
  <ol start="2">
  <li><p>I want convert similar words to one standard format,</p>
  
  <pre><code>chicken(1.20)
  chicken(1.20)
  chicken(1.20)
  cow
  cow
  cow
  cat
  </code></pre></li>
  </ol>