Software bugs are like little mistakes in a computer program that make it not work right, like when a toy doesn't do what it's supposed to because something is wrong inside. People who make the programs have to find and fix these bugs so everything works the way it should, just like fixing a toy so it plays properly again.
System reliability refers to the probability that a system will perform its intended function without failure over a specified period under stated conditions. It is a critical factor in ensuring the dependability and efficiency of systems across various industries, impacting both performance and safety.