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