parergon n. a secondary, derivative, unnecessary, or supplemental occupation, ornament, or (creative) work. Also adj., attrib. Editorial Note: Plural parerga. (source: Double-Tongued Dictionary)
Further reading
In 1916, a small-town newspaper in Pennsylvania printed a fanciful item about a local gathering with a guest list that included, among others, Miss Ella Vader, Mr. Ray Zor, and other punny names. This is part of a complete episode. Transcript of...
A Pennsylvanian who relocated to North Carolina notes that many people in that part of the United States tend to leave the S off of the word cent when talking about money. This well-established feature of Appalachian and Southern varieties often...