Convert erf to kwd

What is the difference between .erf and .kwd?

Description: This format was created to store images in RAW format that were created using Epson digital cameras. The image is stored in an uncompressed form, and it can be directly printed on Epson printers. This format can be edited using the Epson PhotoRAW software or using plug-ins in other image editors.; The kwd file type is associated with KWord, a word processing and desktop publishing application that was part of the KOffice suite primarily for Linux and UNIX-like operating systems. KWord documents, denoted by the .kwd extension, incorporate text, images, and formatting into a single file, allowing users to create professional-looking documents. KWord supported a wide range of features including templates, styles, frames, and more, making it a versatile tool for various document creation needs.