Folklore is the body of expressive culture shared by a particular group of people; it encompasses the traditions common to that culture, subculture or group. These include oral traditions such as tales, proverbs and jokes. They include material culture, ranging from traditional building styles to handmade toys common to the group. Folklore also includes customary lore, the forms and rituals of celebrations like Christmas and weddings, folk dances and initiation rites. Each one of these, either singly or in combination, is considered a folklore artifact. Just as essential as the form, folklore also encompasses the transmission of these artifacts from one region to another or from one generation to the next. For folklore is not taught in a formal school curriculum or studied in the fine arts. Instead these traditions are passed along informally from one individual to another either through verbal instruction or demonstration. The academic study of folklore is called folkloristics.
To fully understand folklore, it is helpful to clarify its component parts: the terms folk and lore. It is well-documented that the term was coined in 1846 by the Englishman William Thoms. He fabricated it to replace the contemporary terminology of "popular antiquities" or "popular literature". The second half of the compound word, , proves easier to define as its meaning has stayed relatively stable over the last two centuries. Coming from Old English lār 'instruction,' and with German and Dutch cognates, it is the knowledge and traditions of a particular group, frequently passed along by word of mouth.
The concept of folk proves somewhat more elusive. When Thoms first created this term, folk applied only to rural, frequently poor, frequently illiterate peasants. A more modern definition of folk is a social group which includes two or more persons with common traits, who express their shared identity through distinctive traditions. "Folk is a flexible concept which can refer to a nation as in American folklore or to a single family." This expanded social definition of folk supports a broader view of the material, i.e. the lore, considered to be folklore artifacts. These now include all "things people make with words (verbal lore), things they make with their hands (material lore), and things they make with their actions (customary lore)". Folklore is no longer circumscribed as being chronologically old or obsolete. The folklorist studies the traditional artifacts of a social group and how they are transmitted.