I use the term "work-in-progress" to mean construction of long term assets (that will be used in the company's business) that are not yet completed. For example, if a company is constructing an addition to its building and the work is only partially completed, the amount spent so far would be recorded as Work-in-Progress, Construction in Progress, or Construction Work-in-Progress (CWIP) and the account would be on the balance sheet as a long-term asset in the section entitled Property, Plant and Equipment. When the project is completed and put into service, the amount would be transferred out of CWIP and would be reported in the account Buildings within Property, Plant and Equipment. At that point, the depreciation of the addition will begin. (If a company is constructing an assembly line or a huge machine that will take time to build, the amounts would also be accumulated in CWIP. When the project is completed and is placed into service, the amount will be transferred from CWIP to Equipment and depreciation will begin.)
To make matters even more complicated, companies producing items under a long-term contract would use an account entitled Construction-in-Process.
Your question points out the need for caution and complete understanding of what the communicator intends. Remember that the sender of a message might not realize that there are important differences between slightly different terms.
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