To strengthen the meaning in its entirety, breaking it down to pieces is the more comprehensible and easy way. Such is in the case of understanding. I might lean more on the later Wittgenstein here since some of my arguments boasts or lack further readings from him. I am thus inclined to mere perception powered by freedom and knowledge.
For a finer grasp, I would simply underline it as Empathy. Our handy dictionary would put it as: the action of understanding, being aware of, being sensitive to, and vicariously experiencing the feelings, thoughts, and experience of another of either the past or present without having the feelings, thoughts, and experience fully communicated in an objectively explicit manner.
Layman’s term would be placing yourself in others’ shoe. It sounds more subjective as ‘understanding’ is subjective in itself. Another way of extracting its meaning is by exchanging sides. What would you feel if I were on your side and you vice versa?
Applying empathy with an open mind able us to see the true comfort and beauty of ‘’understanding’’.