At this stage, your child is becoming much more verbal than before. Earlier, your child’s communication was primarily non-verbal, such as expression through play, gestures, sounds, and shared experiences, but this begins to change drastically fromt this stage. Now his understanding of language is getting better and he's more accustomed to you, and hence, has started understanding the meaning of few of the simple words you utter.
What you need to know
Some children learn faster and some take time to communicate. Some children will be more comfortable talking from around 18 months. Some children are chattering away in full sentences by age 2.
So when should you be concerned? When your child tries hard to communicate with you, you need to understand what your child is expressing to you. Try to slowly teach your child starting with a few words; pronounce them correctly and clearly. Communicate with your child using simple words rather than complex ones.
Start to motivate your child by asking them to do simple tasks. Ask your child to fetch a ball, or some such task, using simple words that your child can understand. He may communicate and express his wants by talking incorrectly, it is you who has to understand and react to his intended communication.