In Minecraft, "mobs" refer to the various creatures and characters that inhabit the game world. They can be categorized into three main types: passive, neutral, and hostile. Passive mobs, like cows and sheep, do not attack players and can be farmed for resources. Neutral mobs, such as endermen, will only attack if provoked, while hostile mobs, like zombies and skeletons, actively seek to harm players. Mobs play a crucial role in the gameplay experience, providing resources, challenges, and interactions. Players can encounter them in different biomes and environments, each with unique behaviors and characteristics. Understanding how to interact with these mobs is essential for survival and success in Minecraft.