In poetry, enjambment is the continuation of a phrase or sentence from one line to the next without any punctuation (e.g., “I wandered lonely as a cloud / That floats on high o’er vales and hills”). With enjambment, a thought continues seamlessly across lines, creating a sense of flow and continuity.
On the other hand, an end-stopped line ends with a punctuation mark. This causes the reader to pause before continuing to the next line (e.g., “I am silver and exact. I have no preconceptions. / Whatever I see I swallow immediately”). End-stopped lines cause the reader to pause and signal the completion of a thought.