Understanding a concept means you get it. The meaning of understanding is a mental grasp : Your understanding might be that your mother will always drive you to school if you miss the bus.
TrafficTalk Crowdsourcing Traffic Reports For A StressFree Commute
Both comprehension and understanding can be used to talk about someone's ability to understand something. Or about how something works: Comprehension usually used with of.
Understanding is a relation between the knower and an object of understanding.
Knowledge about a subject, situation, etc. How to use understanding in a sentence. He noted bond's apparent lack of. Understanding implies abilities and dispositions with respect to an object.