Remove: Get rid of anything that isn’t essential to the application. This could mean content, too; like the language you use in the navigation labels.
Organize: Arrange the elements of the interface so that they fit into logical chunks. This might mean based on a person’s mental model (how they think), or tie in to a more familiar interface pattern.
Hide: Place the most important elements within reach (make them obvious), and hide the others, making them accessible through navigation.
Displace: Pushing some of the functionality to another device, or feature, so that the one interface isn’t responsible for displaying every possible interaction.
When things are more organized and straight-forward, the effort behind are often less visible.