>>81107278Those who learn it as a second language learn it through proper text like news articles or prose fiction. The main points of learning are grammar and vocabulary.
Those who learn it because others around them speak it will mostly learn it from speech, which need not be so precise in grammar. People, while talking, communicate not only with words but also with gestures and body language, which limits the use of speech.
Precise speech is even discouraged while talking to those close to one.
Thus, those who properly learn a language will know more about it than a general person who only uses it to speak.
