What are the key differences between iced coffee and iced espresso in terms of flavor, caffeine content, and preparation methods?

The key differences between iced coffee and iced espresso are in flavor, caffeine content, and preparation methods. Iced coffee is generally milder in flavor, has less caffeine than iced espresso, and is made by brewing coffee and then cooling it down. Iced espresso has a stronger, more concentrated flavor, higher caffeine content, and is made by extracting espresso shots and then cooling them with ice.