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. He noted bond's apparent lack of.
Dc Motor Working Principle Wikipedia at Beth Heard blog
Comprehension usually used with of. Understanding implies abilities and dispositions with respect to an object. Knowledge about a subject, situation, etc.
Mental process of a person who comprehends;
Or about how something works: The meaning of understanding is a mental grasp : How to use understanding in a sentence.
