Unit of measure is a very universal term. It is widely used in accounting and economics. Money is a monetary unit of measure. Money is also a concept. Money is also a physical unit. Non-physical units of measure like Celsius and Ohm and Fahrenheit are also units of measure. All of these need to appear in one article and properly organized. The articles that maybe have to be merged are 1. Unit of account. 2. Units of measurement. 3. System of measurement. The most widely used term in all the above is "unit of measure".