3yo don't ask questions

My boy who just turned 3yo last month doesn't ask question and doesn't answer my question. He doesn't really know how to say what he wants too. Instead he will pull me to the object of interest. Isn't normal? He can says lot of words, 2 words sentence, make lot sounds, memories books/videos and says them out afterwards. He interacts with others like normal kids. What condition do you call this?