Word is a full-featured word processing program that allows users to create, edit, and format documents such as letters, resumes, brochures, and newsletters. It provides many tools for editing text, formatting documents with fonts, styles, colors, and page layout options. Word also allows adding graphics, tables, and mail merge features to personalize documents sent to multiple recipients. The Word screen interface includes elements like the title bar, ribbon tabs, insertion point, scroll bars, and work area to efficiently create and format documents.