The curved window space makes for a great interior dining room - The Bow Window and Circle Bay Window
Aptly named because of its bowed shape, the bow bay introduces a soft and relaxed geometry to an overall scheme. Bow bays are typically large to provide for a generous and sweeping arc of an exterior wall. A circle bay, on the other hand, will have a tight radius and so is typically smaller.
Note that the second-floor circle bay above the entry steps here is an oriel window. If it had been placed at the first floor, it would be called a circle bay.