@everetra - I’ve used both event logs and error logs in my software development. An event log and an error log are similar in concept but two different things. An error log, as the name would suggest, is used to track down errors.
An event log tracks events—anything that you want to monitor, whether it’s an error or not.
For example, in one application I developed at work, I was communicating with a serial device. I needed to track down all of the commands sent to the serial device. Instead of outputting all the information to the console, I output everything to an event log and presto—every second, even every millisecond, I knew the exact command being sent to the serial device.
That beats stepping through the code like I used to do before and of course it’s much faster too.