It takes a lot of liquid to move a small amount of solid material. If the planet's atmosphere is substantial enough, winds can transport small particles, bury features or erode them through sandblasting. Wind transport can be uphill as well as downhill. It can create some features similar to fluvial erosion, but typically broader, shallower, and smoother. Tails form downwind of positive or sometimes negative relief features as turbulence causes particles to drop.
Dune ridges are perpendicular to wind flow, with sharp edge of ridge downwind.
Rounded dunes are formed by alternating wind direction. Layered terrain, straight V-shaped valleys, plains scoured flat with material deposited at edge. If temperatures vary, these can expand and recede or flow downhill. If a layer of ice or permafrost is buried under normal soil and melts suddenly, fretted terrain can be produced. Mountain glaciers must flow downhill.