function createWordMap(Input) {
  // count the number of appearances for each word
  var wordsMap = {};
  Input.forEach(function(key) {
    if (wordsMap.hasOwnProperty(key)) {
      wordsMap[key]++;
    } else {
      wordsMap[key] = 1;
    }});
  return wordsMap;
}

function sortByCount(wordsMap) {
  // create the map that will go into the .cvs file
  var finalWordsArray = [];

  finalWordsArray = Object.keys(wordsMap).map(function(key) {
    return {
      name: key,
      total: wordsMap[key]};
});
  // sort by count in descending order
  finalWordsArray.sort(function(a, b) {
    return b.total - a.total;
  });
  return finalWordsArray;
}