Espresso and Latte

Espresso noun - Strong black coffee brewed by forcing hot water under pressure through finely ground coffee beans.

Latte and espresso are semantically related. In some cases you can replace term "Latte" with "Espresso", this nouns are similar.

Latte noun - Strong espresso coffee with a topping of frothed steamed milk.

Espresso and latte are semantically related. You can use "Espresso" instead a noun "Latte".