Terrain Feature

A Terrain Feature refers to any dynamically-spawned scenery on a World other than its Points of Interest; Flora in the form of Grass, Flowers, Shrubs, and Trees; Fauna in the form of Critters, Fish, and Insects; Boulders and small Rocks; or — while the World is still being tended towards blooming — Stinkweeds, Withering grass, detritus, and seed plots in need of attention from the Apprentice's Tools. Terrain Features can be walked and/or climbed on, but are otherwise not interactive.

Each World has its own colour of Bedrock which all Terrain Features on that World share, as well as a separate Ground colour which is initially visible over most of a World but, as the Apprentice tends to the World, the Ground is slowly hidden under groundcover Grass, typically of a colour different than the colours of both Bedrock and Ground. Different Biomes have different palettes from which a given World's Bedrock hue can be selected. Bedrock colour and the colours of Boulders and Rocks are usually distinct hues, but can be visually similar or even identical, particularly on Fungi and Nature Worlds.

Terrain Feature types
Note that this listing is not exhaustive and there are Terrain Features remaining to be discovered!
 * Bedrock Outcrop refers to any small extrusion of Bedrock above the Ground of a World, sometimes easily mistaken for a Rock.