:up: Also, bear in mind that the two images shown in the Original Post show different things. The right-hand image shows two equally-sized sinks side by side. I'd call that 'a double sink'. The left-hand image shows a more limited/less flexible arrangement; you can't use the little sink in the same way as the main sink. It's a cheaper way of producing something that people want, to "keep up with the Jones's" without paying for a double one. I'd call that a 'twin sink'. (But individual manufacturers/catalogues might differ, and I'm not terribly confident about the distinction - which I rarely have occasion to make in real life. And of course this might be a case of that tendency that 5jj mentioned elsewhere, for ELT professionals [and other language introspectors] to invent tempting but unreal distinctions.)
b