Second-rate and White-bread

Second-rate adjective - Of average to below average quality.

White-bread and second-rate are semantically related In some cases you can use "White-bread" instead an adjective phrase "Second-rate".

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

Second-rate and white-bread are semantically related in average topic. Sometimes you can use "Second-rate" instead an adjective phrase "White-bread".