a discrepancy

A "discrepancy" is a difference that might be a mistake.

For example, if an event is listed in one place with a date of July 16th and in another place as July 17th, that's a discrepancy. You can also have discrepancies in calculations, or in people's descriptions of something that happened.

The word "discrepancy" sounds a little technical or academic.

This phrase appears in these lessons: