How do we understand language?
First, language starts differentiating itself from everything else. Be it a train, a car, a cat - we start understanding that this is something else. We define that as language.
Then, we correlate what we see or feel around us with the language. Thus it becomes more individualized and we realize it is comprised of what we call sounds.
Next, we start noticing patterns of sounds. The simpler they are, the easier they are to remember and correlate with our senses. Thus we from vague concepts.
Next, by correlating our vaguely-defined concepts with our senses, we individualize the concepts and form intuitions.
Intuitions help us learn faster, because they are always one step ahead of understanding. First we intuit, then realize what happened. Sometimes, intuitions can be so powerful that they alter our recalling of reality.