Lighthouse surrounded by a smooth surface of waterLighthouse surrounded by a smooth surface of water
Waterfalls flow smoothly into the river below and the skyWaterfalls flow smoothly into the river below and the sky
Smoothly mown grass and a ladder of different levels in the groundSmoothly mown grass and a ladder of different levels in the ground
Smooth transition of the day into evening twilightSmooth transition of the day into evening twilight