What is a group of Terrains called?

A group of terrains is commonly called an Atlas.

Collective nouns for terrains refer to words that are used to describe groups of similar types of land formations or geographical features. These collective nouns enable us to depict the diversity and variety of terrains that exist across our planet. Here are a few examples: 1. Cluster: Cluster is a collective noun used for terrains when we want to describe a group of small and closely grouped landforms. This term is often used when referring to a close grouping of hills or mountains. 2. Range: Range is a collective noun that represents a large area or series of interconnected landforms, such as a mountain range or a range of hills. The terrain within a range is usually similar in nature, with common characteristics. 3. Ridge: Ridge is a collective noun commonly used for terrains comprising a series of elevated narrow land formations, often with a long and thin shape. These land undulations create prominent geological features and are found both in mountains and hills. 4. Dunes: Dunes are collective nouns often used when referring to terrains consisting of hills or ridges of sand accumulated by the action of wind or water. They form in deserts, coastal areas, and sometimes inland, creating unique landscapes. 5. Plateau: Plateau is a collective noun representing a large flat landmass elevated above the surrounding terrains. It is often denoted as an extensive tableland with steep sides, found in various regions across the world. 6. Archipelago: Archipelago is a collective noun indicating a terrain that consists of a chain of islands or a group of closely spaced islands. These terrains can be found in oceans, seas, or large lakes, forming unique ecosystems and scenic views. 7. Valley: Valley is a collective noun that refers to terrains in lowlands between hills or mountains. It typically form through the natural erosion of rivers, creating a vast area surrounded by higher elevations. 8. Peninsula: Peninsula is a collective noun used for terrains that are almost entirely surrounded by water but connected to the mainland by a narrow strip of land. These features often yield coasts with diverse geography, making them valuable hubs of biodiversity. These collective nouns help us categorize and better comprehend the various types of terrains found around the world, emphasizing the landscapes' distinctive characteristics and providing a common terminology for communication and study purposes.