There are 47 countries on the African continent, including the disputed territory of Western Sahara. However, the islands off the coast are also usually listed as African, bringing the total to 53. The island nations are Cape Verde, São Tomé and Príncipe, Madagascar, the Comoros, the Seychelles, and Mauritius.
The longest palindromic word in the Oxford English Dictionary is the onomatopoeic tattarrattat, coined by James Joyce in Ulysses (1922) for a knock on the door. The Guinness Book of Records gives the title to detartrated, the preterit and past participle of detartrate, a chemical term meaning to remove tartrates.