Rozłąka Anglais:

One day apart seems like a separation of three years.

Making a clean separation between the "useful" and the "useless" is about as straightforward as drawing the fine line between water and ice.

Among married couples, there has been an increase in divorce and separation with the result that there are many more one-parent families.

The separation of gold from sand is problematic.

This town excels in waste separation.

Supposedly, everyone is connected to everyone else by, at most, six degrees of separation.