A 2-year-old typically knows and uses between 50 to 200 words, with some children having vocabularies over 200 words. This range is normal and reflects the individual pace of language development. At this age, toddlers not only know individual words but also start to combine them into simple two-word phrases like "want juice" or "big truck," indicating growing communication skills. They use a mix of everyday nouns, verbs, simple adjectives, and social expressions. Vocabulary size can be influenced by factors such as personality, learning environment, and social interactions. Some milestones for a 2-year- old's vocabulary include answering simple questions ("Where's your toy?"), asking basic questions ("What’s that?"), and expressing needs through words rather than just gestures. Toddlers at this stage also understand many more words than they can speak—potentially knowing over 1,000 words though speaking fewer. Expanding a 2-year-old's vocabulary can be encouraged by interactive reading, describing daily activities, and engaging in conversations with them.