Which term refers to information specifically related to a single lawsuit?

The term that specifically refers to information related to a single lawsuit is "Matter." In legal and insurance contexts, a "Matter" encompasses all the details and documentation related to a particular legal issue being addressed, which can include lawsuits or legal claims. It often includes the parties involved, case notes, evidence, and pertinent documentation that will support the handling of that specific legal issue.

In contrast, while "Claim" generally refers to a report made to an insurance provider requesting coverage for a loss, and "Case" can be a broader term used for multiple issues or legal matters, "Matter" is more precise in its association with a single legal proceeding. "File" tends to refer to all documents related to various matters and can encompass multiple claims or cases, which makes it a broader and less specific term than "Matter."