My sister and I pitched a fit one time in the late 70’s, because Mom had bought Del Monte Catsup instead of our regular Heinz ketchup. We insisted that it wasn’t the same thing (although in our defense, it probably did have a slightly different flavor, just as Pepsi has a slightly different flavor than Coke. The catsup was a bit more vinegary, if I can trust a forty year-old memory). But I can distinctly remember my poor mother’s frustrated argument that catsup was just a different way of spelling ketchup.
That was soon after the Great Millet Fight of 1977, when I refused to eat a healthy cereal that included millet, because millet was a birdseed and I wasn’t a bird. So there.