input: Write a function to take in two strings as input, and output a list of all the words in both strings.
  def string_to_list(s1, s2):
      s1_list = s1.split()
      s2_list = s2.split()
      output_list = s1_list + s2_list
      return output_list
  
  words = string_to_list("I want to make a difference", "The journey to success is long")
  print(words)
output: def string_to_list(s1, s2):
      s1_list = s1.split()
      s2_list = s2.split()
      output_list = s1_list + s2_list
      return output_list