Bench, benchtop and worktop describe the same object. In Australia and New Zealand the installed thing is a benchtop; in a commercial kitchen schedule it is usually a bench; in the United Kingdom it is a worktop. The words are interchangeable as language and not interchangeable as specifications — because each market pairs its word with its own height, depth and unit convention.

The vocabulary is not the problem. The conventions that come with it are.
Millimetres everywhere except North America, and North America is 14 mm taller. That is the whole substance of this page.
36 inches is 914.4 mm. The metric convention is 900 mm. The difference is small enough to disappear in a drawing review and large enough to be felt by someone who stands at the bench for eight hours.
Where it bites: a project with a North American appliance schedule and Australian joinery, or a hotel group that specifies in inches and builds in millimetres. The top is cut to one convention, the carcass to the other, and the error surfaces at installation.
The cheapest insurance is to write the finished height in millimetres and put the inch equivalent in brackets beside it on the drawing. We quote that way by default, because the cost of the misunderstanding lands on whoever is installing.
Four lines, regardless of which word you use.
The word “bench” also carries a second meaning in commercial work: a bench is often a freestanding table with legs rather than a top on a carcass. If you write “bench” and mean a top, say that the frame is not in scope.
We reply using the word you used, and we keep the units millimetres. That sounds like a small courtesy; it prevents the most common mismatch on a repeat order, where a new person picks up the file and reads “worktop” as a different product.
On the quote, every line is named rather than numbered: plate, cutting, folding, welding, graining, packing. Grade is stated as 304 (1.4301) or 316L (1.4404) with the mill certificate to the heat; thickness as a number in millimetres; the edge tolerance as ±0.05 mm against the machined edge specifically. Lead time is 15 working days from a confirmed drawing, and packing is on-edge with the edges protected.
If a word in your document does not match anything we make — a trade name for a bonded panel, say — we will ask rather than guess. That question costs one email; a guessed answer costs a remake, and the warranty does not cover a part that was made to the wrong word.
Benchtops, AU and NZ · Kitchen benchtop guide · Countertop specification · Send a drawing