What Are the Differences Between Pie and Tarts? It seems entirely off-topic for an Agile article but stay with us.

The Pie

Flaky, firm pie crust is made from flour, fat (like butter, shortening, or lard), cold water (occasionally including vinegar or vodka), and salt. On the other hand, Tart shells are made with a conventional pastry dough: flour, butter, water, and occasionally sugar, which results in a more crumbly, "short crust" when baked.

The Tart

Tarts are generally the more delicate and composed of the two, featuring intricate patterning and less forgiving textures. However, some variations use a crust more similar in form to a rough puff pastry. Pies are often considered more humble and rustic—presented in their pie dish and paired with a scoop of ice cream for pie à la mode. In contrast, picture-perfect tarts are often carefully removed from their tart pan and served on their own.

Expectations Matter

Terms and expectations matter in ensuring the right solution is being delivered to your customer or business partners. If your customers ask for tarts and you give them pies, that will produce a lousy customer experience. It's eliciting terrible requirements because you don't understand your customer's expectations. Clarify the terms your customer is using, but also contrast them. Compare the term against other words that might mean that same thing or close to it. Contrast the differences between similar things to gain a deeper understanding of what your customer is expecting.