Commodities are grouped into one of 18 classes from a low of class 50 to a high of class 500 based on an evaluation of four transportation characteristics: density, stowability, handling and liability.
Patience implies suffering, enduring or waiting, as a determination of the will and not simply under necessity. As such it is an essential Christian virtue to the exercise of which there are many exhortations.
Having patience means you can remain calm, even when you've been waiting forever or dealing with something painstakingly slow or trying to teach someone how to do something and they just don't get it. It involves acceptance and tolerance, and is usually easier to have when there's something in it for you at the end.