说话 is a very common verb in our daily speaking. Sometime an extra character can be added between the two characters and we get some interesting phrases like gossip (说闲话), 说废话 (talk nonsense) etc.
Notes about this video:
说话 speak, talk
这个人不爱说话。 This person doesn't like to talk.
别说话了，老师来了。 Stop talking anymore. The teacher is coming.
说闲话 gossip, make sarcastic or critical comments
说废话 to talk nonsense