The term 'accumulation of uncompleted work' can be summarized as a 'BACKLOG'. A BACKLOG is an accumulation of tasks or projects that have yet to be completed. It is often used to refer to the amount of work that has been left undone, or the amount of time it will take to complete all of the tasks. Backlogs can be used to measure the progress of a project, or to identify areas where additional resources may be needed.