“Notebooks and laptops occupied distinct market segments into the mid-1990s, but customer preference for larger screens led to notebooks converging with laptops in the late 1990s. Since the early 2000s, the terms laptop and notebook are used interchangeably, irrespective of physical dimensions…” https://en.m.wikipedia.org/wiki/Notebook_(laptop)
Two years ago, Apple switched from calling MacBooks notebooks to calling them laptops: https://9to5mac.com/2022/10/07/apple-mac-notebooks-become-laptops/