The antessive cases indicate the location in front of the noun.

The linguist studied various associative cases in the language.

I have two pen-cases on my desk.

There are many special cases in this problem.

Doctors need to handle special cases with care.

In software testing, it is important to consider corner cases.

The company is special casing this customer's request.

I found several cicada cases on the tree.

The trophy cases in the school hallway display the achievements of our students.

There are many court cases pending in the legal system.