| Feature of Acquisition | Age |
| Cooing and Laughing | |
| Melodic Utterances | |
| Vocal Play | |
| Basic Biological Noises | |
| Babbling | |
| By which age that children learn, on average, 22 new words a month. | |
| By which age that children produce, on average, 20,000 words a day | |
| | Feature of Acquisition | Age |
| Holophrastic | |
| Two Word Stage | |
| Telegraphic Stage | |
| Post Telegraphic | |
| Naming Things | |
| Giving Opinions | |
|