A couple of good quotes about buzzwords vs jargon, from Kathy Sierra during her explanation of why the term “Web 2.0” is not meaningless.
Where buzzwords are used to impress or mislead, jargon is used to communicate more efficiently and interestingly with others who share a similar level of knowledge and skills in a specific area.
…if you took away our jargon, the conversations would not just be slower, they’d be dumber. We couldn’t converse on some of the more sophisticated, complex, higher-level ideas about horses or software development. The experience wouldn’t be as rich, productive, or engaging. Strip away the specialized words and you strip away part of why being better is better.