A bill of quantities is a document that lists all the materials, labor, and other costs involved in a construction project. It is an essential tool for architects, contractors, and engineers, providing a clear breakdown of the project's estimated costs. However, there are many other terms that can be used interchangeably with bill of quantities. These include tender documents, cost estimate, schedule of rates, quantity survey, and work order. Each of these terms refers to a document that helps to estimate the costs of a construction project. They all serve the same purpose, to provide transparency and accuracy in the budgeting process of any project.