What’s the difference – darknet, dark web, deep web, and surface web?

By way of illustration, let’s imagine the Internet as one big city. Like any metropolis, it contains public spaces open to everyone, such as the streets, boulevards, and parks you’ll find on the map. Anyone can go there and look around; 360-cam cars can see them; and you can easily find them on a map such as MapQuest or Google Maps.