Doppelgängers: Coca-Cola vs Cappuccino

Source: http://mentalfloss.com/article/48759/why-do-diet-coke-and-mentos-react

Has it ever occurred to you how much alike these two look? When you pour your Coke straight from the fridge in your glass, the lovely foam appears. 1cm of the perfect mountain top/cloudy bubbles/beaten whites. Is it a coffee or a Coke?