DOC
XLSX files
DOC (Word document) is a file format used for word processing documents. Created by Word, DOC files can contain text, images, formatting, and other elements. They are commonly used for creating and editing textual documents, reports, and letters.
XLSX (Office Open XML spreadsheet) is the modern file format for Excel spreadsheets. XLSX files store tabular data, formulas, and formatting. They offer improved data integration, enhanced security, and support for larger datasets compared to XLS.