Even in a portable format, Word 2013 delivers several core improvements over its predecessors:

Settings and preferences are often stored within the same folder, allowing you to maintain your workspace across different machines.

While the convenience of "carrying Office in your pocket" is appealing, using unofficial portable versions carries high risks: Office 2013 End of Support - Microsoft 365

The "Touch Mode" expands the Ribbon and buttons, making it easier to use on touchscreen devices. The Risks of Using Portable Office Software