Run-of-the-mill and White-bread

Run-of-the-mill adjective - Being of the type that is encountered in the normal course of events.

White-bread and run-of-the-mill are semantically related In some cases you can use "White-bread" instead an adjective phrase "Run-of-the-mill".

White-bread adjective - Of or belonging to or representative of the white middle class.

Run-of-the-mill and white-bread are semantically related in common topic. Sometimes you can use "Run-of-the-mill" instead an adjective phrase "White-bread", if it concerns topics such as average.