Domestic refers to something that occurs within a country or nation’s own borders, while non-domestic refers to something that occurs outside of a country or nation’s borders.
For example, domestic issues or affairs are those that affect a country or nation and its citizens within its own borders, while non-domestic issues or affairs are those that affect a country or nation but originate outside its borders.
In some contexts, the term domestic may be used to refer specifically to issues or affairs that are related to the home or household, while non-domestic may be used to refer to issues or affairs that are related to business or public life.
For example, domestic violence refers to violence that occurs within the home, while non-domestic violence refers to violence that occurs outside the home, such as in public spaces or in the workplace. Similarly, a domestic animal is one that is kept as a pet or for other purposes within the home, while a non-domestic animal is one that lives in the wild or is kept for other purposes outside the home.