Understanding and managing feelings of anger, fear and frustration is a new skill for children to learn. If he nods his head yes, ask him why he feels frustrated. This will give him a chance to express himself. Often children begin to feel calmer as soon as they realize someone understands them. A child is always learning new words.
Most children are very enthusiastic about learning to speak.
It is important for caregivers to have the same enthusiasm. If a child says a word that does not seem to make sense, ask more questions to allow the child to explain what the word means. By doing so, you will be encouraging the child to communicate his or her thoughts and ideas. You may gently help to correct a child if he uses the wrong word. This will help the child to learn.