A latte and a cappuccino combine espresso with heated, aerated milk. CoffeeBox explains the difference through their usual balance: a latte tends to contain more liquid milk and a thinner foam layer, while a cappuccino is commonly smaller with a more prominent foam texture. These are useful conventions rather than compulsory fractions followed by every café.
Look at the actual serving. A large cappuccino can contain more milk than a small latte, and espresso doses vary between menus. Descriptions such as dry or wet cappuccino refer to changes in the milk-and-foam balance. A cup shape or visible latte art is not enough to identify the recipe reliably.
If caffeine matters, ask about the espresso dose rather than judging by how strong the coffee tastes through milk. Adding more plain milk to the same espresso changes concentration without adding caffeine. When preparing either drink at home, record espresso yield, milk amount and texture so you can repeat the balance you enjoy.

The conversation
A good question can make a better brew.