Understanding

Understanding is a psychological state in relation to an object or person whereby one is able to think about it and use concepts[?] to be able to deal adequately with that object.

For example, I understand the weather if I am able to predict and give an explanation of some of its features.

Or, a psychiatrist understands another person if he knows his anxieties and their causes, and can give him useful advice on how to minimise the anxiety.

I understand a command if I know who gave it, what is expected, and whether the command is legitimate.

Also one can understand a reasoning, an argument, and a language.

See also knowledge, epistemology, and thought.