The "lore" of folklore can be divided into genres or the categories of expression that people learn and create as a part of their heritage. At the broadest level, genres can be categorized as oral, performance, material, or customary. Specifically, the list of folk genres is almost endless. Oral traditions include such things as stories, legends, jokes, and songs, but songs can also be grouped with performance traditions as can instrumental music and dances. Material traditions include crafts, costumes, foods, and vernacular (or traditional) architecture.