Jargon is an old file of hacker culture slang definitions from the MIT-AI Lab "HUMOR;" directory, including the word "hacker" itself, that that Eric S Raymond hijacked and redefined to spread his bat-shit crazy political ideology.

https://news.ycombinator.com/item?id=20382529

The response to your comment seems to be negative, but I personally think it’s accurate and on-topic, including the note about ESR and his ideology.

Jargon is a word derived from Old French, and has been used in its current meaning since at least 1849. ESR may have listed some examples of jargon, but he for damn sure didn't get to define it.

> Jargon has a slightly pejorative sense, just like in the article

Not necessarily. Jargon is not technical. But it is an emergent feature of language in semi-isolated groups. Things get nicknamed, inside jokes stick, and from the outside it looks performative while inside it’s quite natural. That it subsequently often takes on a performative element, in particular by new comers, is an in-group mechanism, but it’s not always useless as a signalling mechanism. There even seems to be an in-built sense of disgust with respect to overly performative jargon that keeps the system in check most of the time.

Jargon means exactly the same as "technical vocabulary", but without carrying the connotation that requires their area of interest to be "technical".