Resource contention

Resource contention is like when you and your friends want to play with the same toy at the same time, but there's only one toy to share. When many people or processes need to use the same resource (like a computer's CPU, memory, or hard drive), they have to take turns, and sometimes they have to wait for their turn if someone else is already using it. It's like waiting in line for your turn on the slide at the playground. This can slow down the whole system, which can be frustrating but also necessary to make sure everyone gets a fair chance to use the resource.