domains

This is a really simple query but i am confused.

when identifying appropriate domains for an attribute set, can the domain be non numerical?????

Need more explanation.

Well i need to provide the domain for an archaeological find within a field.

Yet some finds are on the field boundary of two fields.

Can the domain be "boundary field 1 and field 2". Or are precise x,y co-ordinates needed?

Thanks.

In my opinion both should be there. What is the business requirement?

Providing both information will help in locating.