He noted bond's apparent lack of. Understanding is a relation between the knower and an object of understanding. Both comprehension and understanding can be used to talk about someone's ability to understand something.
MÜNCHENER RÜCK Wenn Buffett die hat, muß die doch gut sein stock3
Knowledge about a subject, situation, etc. Comprehension usually used with of. Understanding implies abilities and dispositions with respect to an object.
Understanding a concept means you get it.
The meaning of understanding is a mental grasp : How to use understanding in a sentence. Or about how something works: Your understanding might be that your mother will always drive you to school if you miss the bus.