Comprehension (noun)

1. The ability to understand something.
2. The ability to grasp the meaning of something.

Origin:

From the latin word "comprehensio" meaning "grasping" or "understanding".

Examples:

1. Reading comprehension is an important skill for students.
2. The teacher checked the students' comprehension of the material.
3. He had a good comprehension of the subject.
4. The lecture was designed to improve the audience's comprehension.
5. The test was designed to measure comprehension of the material.