Biomes are regions in Minecraft that have different terrain generations, block composition, climate, mob spawns, etc. When you first spawn in a new world, it will be in an Overworld biome.

While taiga villages can spawn in either ... One of the most interesting Minecraft biomes, Ice Spikes are immediately recognizable, even from a distance, from their tall spires of ice.

icy area with a tall ice spike in sight. This can be a great area if you are going for a winter theme, but under spawn, you'll find a Trial Chamber. These are essentially dungeons in Minecraft ...