Back when and Of old

Of old and back when are semantically related in previously in time or order topic. In some cases you can use "Of old" instead the phrase "Back when" as an adverb or an adjective, when it comes to topics like in ancient times.

Back when and of old are semantically related in previously in time or order topic. Sometimes you can use "Back when" instead the phrase "Of old" as an adverb or an adjective, if it concerns topics such as in ancient times.