The best definition for the word, “learning” is: understanding and remembering what you are trying to learn.
In other words, you haven’t “learned” the meaning or definition of a word or concept until you understand and remember it!
And, here’s a fact, the more in-depth you understand and remember the definition of a fact or concept the longer you will remember them.
And, remember this fact, you must have a strong work ethic and a never-give-up attitude to learn your facts and concepts, well!