quirk

a strange attitude or habit

a small, recessed detail or groove used to create a visual transition or decorative element between different architectural features

A quirk is a decorative groove or indentation that is typically found on the edge of a molding or trim. This feature adds visual interest and detail to architectural elements, enhancing the overall design. Quirks are often used to create a transition between different surfaces or to separate various decorative profiles, contributing to a more complex and layered appearance. Commonly seen in classical architecture and furniture, quirks showcase the craftsmanship involved in creating intricate details that elevate the beauty and character of a piece or structure.