input: Write a python function to return a random word from a predefined list.
  assert get_word() in ["television", "hydrogen", "graduate", "programming", "python", "puppy", "application"]
  assert isinstance(get_word(), str)
  assert len(get_word()) > 0
output: import random
  
  def get_word():
      words = ["television", "hydrogen", "graduate", "programming", "python", "puppy", "application"]
      return random.choice(words)