Metric unit and Unit of measurement

Metric unit noun - A decimal unit of measurement of the metric system (based on meters and kilograms and seconds).

Unit of measurement and metric unit are semantically related. In some cases you can use "Unit of measurement" instead a noun phrase "Metric unit".

Unit of measurement noun - Any division of quantity accepted as a standard of measurement or exchange.

Metric unit and unit of measurement are semantically related. Sometimes you can replace phrase "Metric unit" with "Unit of measurement", this phrases are similar.