Middle-class and White-bread

Middle-class adjective - Occupying a socioeconomic position intermediate between those of the lower classes and the wealthy.

White-bread and middle-class are semantically related. In some cases you can use "White-bread" instead an adjective phrase "Middle-class".

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

Middle-class and white-bread are semantically related. Sometimes you can use "Middle-class" instead an adjective phrase "White-bread".