How to differentiate between console.error output and thrown exception in Javascript Console

I am creating a Chrome Extension with the help of an API. It happened that the API was not responding for a particular query, so, I checked out the console (extension's popup console) and found some error messages. All I could not figure out was whether it was a console.error or a thrown Exception. Is there a general way to figure this out just by looking at the console messages or if not then without it.

Yes, the text is different. Try it yourself.