"Loch" in Scots isn't cognate with German "Loch" meaning hole, it's from Scottish Gaelic "loch" meaning lake, and cognate with Latin "lacus", English "lake", and German "Lache". Scottish Gaelic is a close relative of Irish and sounds quite similar to it.
Edit: "reek" in Scots means "smoke" and is probably cognate with German "rauchen".
Edit: "reek" in Scots means "smoke" and is probably cognate with German "rauchen".