Instructions:

  1. Start word
  2. Open a document

  3. Go to tab "Home"
  4. Click "Replace"
  5. Click "More"
  6. Type a word to search for, in this case "Car"
  7. Type a word in replace window, in this case "Car"
  8. Click "Format"
  9. Select formatting, for example "Bold"

  10. Click "Replace all"
  11. Click "Close"