Does jargons really mean nonsense

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most people especially youths used the word jargon without knowing what it really means. from the dictionary priscription its a technical word used by professionals but difficult for others to understand. to most people they think when u say jargon they believe that u mean its nonsense.most people get these wrong. the word its now used when ever u think someone is making a statement that does not have sense its now a common word. a friend of mine ones told me that if u say u are speaking jargons its means that person is speaking like a professional. i some how disagree with that but when i made research on that i get to know that its true. Any one with his/her own contribution