Latte is a coffee drink with steamed milk,

also see Latte Art, Latte Variety, Latte with milk.

Expresso is a concentrated coffee drink.

You can try the iced-coffee,

or the ice cream coffee, with mocha cupcakes on the side.

An iced latte is a popular cold coffee drink. 
It's made with espresso, caramel, chocolate,
cold milk, and lots of ice.
Add sweeteners, syrup, honey, or other flavoring.
Don't forget the cream on top.  Stir and enjoy.

More on iced-latte, iced-latte-grande.

Iced-matcha-latte is a new item.
Just replace your espresso with matcha (tea powder).
Add sweeteners, and enjoy.