The etymology of ketchup actually has several competing theories, namely: the Chinese theory, the “eggplant sauce” theory, the Malay theory, and the European-Arabic theory. The Chinese theory seems pretty strong, we must admit…
In the Chinese theory, it stems from either “kôe-chiap” or “kê-chiap”, both from the Amoy dialect, where it means “the brine of pickled fish or shellfish.”
As for the “eggplant sauce” theory, “ketchup” derives from a Chinese word composed of two characters (茄汁), which means “eggplant sauce”. The first character (茄), meaning “eggplant”, is also the root for the word “tomato” and the second character (汁) means “juice” or “sauce.”
The Malay theory states that the English word originates from the Malay word kicap (or, kecap, ketjap), which translates to “fish sauce” – which is borrowed from the Chinese, anyway…
European-Arabic Theory: E.N. Anderson, an American anthropologist, claimed that ketchup comes from the French escaveche, meaning “food in sauce” (imagine… French ketchup!) while culinary historian Karen Hess traced it back to Arabic iskebey, or “pickling with vinegar”.
“Essentially, the Italian versions of early cards used the suits Cups, Swords, Coins and Batons — which, on migration to England, became Hearts, Spades, Diamonds and Clubs. The image for Spades on English and French cards looks somewhat like that of the German Acorn or Leaf suits, but its origin is revealed by its name rather than its shape. The Spanish and Italian for sword is ‘espada’ and ‘spada’ respectively, hence the suit ‘Swords’ became anglicized as ‘Spades’.”