system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What are the differences between a thread and a core in a CPU?
gpt
A thread is an instruction that needs to be processed

A Core is a brain that can process a task.

The more cores a processor has the more tasks it can perform simultaneously.

Applications can be single threaded meaning that all of its instructions have to be processed by 1 core, or multi-threaded meaning that it's instructions can be broken up and run by multiple cores simultaneously.