The suffix indicates that this is a compressed archive. It is a capsule. Inside, there is likely not just one file, but a hierarchy—a folder containing models, textures, project files, and perhaps a "readme" text document. The .zip format suggests portability. It implies that the data was meant to be moved, shared, and unpacked by an end-user, distinct from the creator’s original workspace.
The file in question, "File- GreatM8sfm-GreatB8sfm---2018---08.zip", presents itself as a zipped archive. Given its filename structure, it seems to imply a specific format and possibly content type, but without further context or information about its source, evaluating its actual contents or intended use is challenging. File- GreatM8sfm-GreatB8sfm---2018---08.zip ...
However, based on standard security practices and available information: The suffix indicates that this is a compressed archive