I tried many terms, box bay window, bay window, oriel window bow winodw
Can you post your image and show us what you’re trying to do? I can give it a try.
You may have some luck using a style image instead of a prompt.
Also if you’re using replace, play with the mask size as that will impact the results. Sometimes if the mask is too small it will struggle to give decent results and the AI will do better if you give it more room to work with.