At what age range do children's vocabulary typically grow from 50 words to thousands?

The age range during which children's vocabulary typically expands dramatically from approximately 50 words to thousands is primarily from ages 2 to 4. During this critical period, children experience a significant language explosion, where they begin to rapidly acquire new words and understand more complex language structures.

At around age 2, children can usually say around 50 words, but by the time they reach age 4, their vocabulary can grow to encompass several thousand words. This growth is supported by their cognitive development, social interactions, and exposure to language in their environment. Children begin to form simple sentences and express more complex ideas, making this stage vital for language acquisition.

In contrast, the other age ranges mentioned reflect more nuanced vocabulary development stages. However, they do not align with the earlier, more explosive growth that occurs in the 2 to 4 age range.