What alternative names are given to the fourth stage of first-language acquisition?

The fourth stage of first-language acquisition is often referred to as the telegraphic or early multi-word stage. This stage typically occurs when children begin to combine words into short sentences that convey essential meanings, similar to how telegrams were sent using the fewest possible words. During this period, children are not yet using fully grammatical sentences but are able to express more complex ideas through combinations of two or more words. Their utterances may include critical content words while omitting less important grammatical elements, resembling a "telegraphic" style of communication.

This stage demonstrates significant language development, as it shows that the child is moving beyond single words and is starting to understand how words interact and can be used together to convey more comprehensive meanings.