Doughnut, guage and grey have been in my vocabulary since I was young, though I've found that few Americans use "grey" and most young folk only know donut, I must admit. Our words, alas, have been corrupted by advertisements and signs.
I still recall the first 50-word Monday spelling test in which I didn't get enough correct words to avoid taking the test on Friday in the sixth grade. ( The highest scores did not have to take the test on Friday... and I never had to... except that week! ). On Sunday we had passed the "Chicken in the Ruff" place, so I was relieved that I knew how to spell that word the next morning... only to find out that "rough" is the correct word! And that summer I learned that it's spelled the same way alongside the fairways on the golf links too! I spent a good deal of time there... on the right side of the course.
Lightly, Daniel