Mile: The mile is a unit of length primarily used in the United States and some other countries. It is equal to 5,280 feet or 1,609.34 meters. The mile is commonly used for measuring longer distances, such as road distances.
Nanometer (nm): The nanometer is equal to one one-billionth of a meter (0.000000001 meters). It is used to measure extremely small structures, such as molecules and nanoparticles.