input: Write a function to sort a list of words alphabetically.
  assert sort_words(["banana", "apple", "cherry"]) == ["apple", "banana", "cherry"]
  assert sort_words(["dog", "cat", "elephant", "bear"]) == ["bear", "cat", "dog", "elephant"]
  assert sort_words(["zebra", "monkey", "aardvark"]) == ["aardvark", "monkey", "zebra"]
output: def sort_words(words):
      return sorted(words)