Old-fashioned and Out of fashion

Old-fashioned adjective - Pleasantly reminiscent of an earlier time.

Out of fashion is a synonym for old-fashioned in out of date topic. In some cases you can use "Out of fashion" instead an adjective phrase "Old-fashioned".

Old-fashioned is a synonym for out of fashion in unfashionable topic. You can use "Old-fashioned" instead an adjective phrase "Out of fashion", if it concerns topics such as in vogue.