While a WBS focuses on the breakdown of work, a project schedule or project plan focuses on the timing and sequencing of that work. A WBS is a hierarchical decomposition of the project deliverables, breaking them down into smaller, more manageable components. It helps in organizing and understanding the scope of work required for the project.  A project schedule is a timeline that outlines the sequence and duration of activities required to complete the project. It includes specific start and end dates for each task and helps in planning and tracking progress.