input: Write a python function to sort a list of words in alphabetical order.
  assert sort_words(["dog", "cat", "apple", "banana"]) == ["apple", "banana", "cat", "dog"]
  assert sort_words(["zebra", "monkey", "ant", "elephant"]) == ["ant", "elephant", "monkey", "zebra"]
  assert sort_words(["python", "java", "c++", "ruby"]) == ["c++", "java", "python", "ruby"]
output: def sort_words(words):
      return sorted(words)