Folklore is the boy of expressive culture, including tales, music, dance, legends, oral history, proverbs, jokes, popular beliefs, customs, and so forth within a particular population comprising the traditions (including oral traditions) of that culture, subculture, or group. It is also the set of practices through which those expressive genres are shared. The academic and usually ethnographic study of folklore is sometimes called folkloristics. The word 'folklore' was first used by the English antiquarian William Thoms in a letter published by the London Journal Athenaeum in 1846.