People with autism who do not speak more than a few words are said to have non-verbal autism, it is not a diagnostic term, it tends to occur in level 3 autism or most severe autism. Some people with nonverbal autism often learn to speak a few meaningful words but they often fail to keep up significant conversations. For instance, the child will be able to say ‘park’ if he wants to play in the park but he won't be able to express what games he wants to play.A child with non-verbal autism may not use speech effectively enough to communicate, but they may write, and use picture cards, and digital aids like various apps to express their needs.