Jargon

All Music Guide:

Taking their noise of moody, laid-back pop riffs to their San Francisco headquarters, Jargon's indie roots still managed to be critically labeled as alternative rock, even though their approach was never intended to sound mainstream. Regardless, Jargon's sound was eventually captured in 1998 on their first self-titled full-length courtesy of Boiled Lobster Records. Unfortunately, not too long after this release, Tim (singer/guitarist) and Trevor (bass) remained as the only original members of Jargon after the departure of Rich (drums) and Jason (guitarist).

Wikipedia:

Jargon is terminology which is especially defined in relationship to a specific activity, profession, group, or event. The philosophe Condillac observed in 1782 that "Every science requires a special language because every science has its own ideas." As a rationalist member of the Enlightenment he continued, "It seems that one ought to begin by composing this language, but people begin by speaking and writing and the language remains to be composed."

In earlier times, the term jargon would refer to trade languages used by people who spoke different native tongues to communicate, such as the Chinook Jargon.

In other words, the term covers the language used by people who work in a particular area or who have a common interest. Much like slang, it can develop as a kind of short-hand, to express ideas that are frequently discussed between members of a group, though it can also be developed deliberately using chosen terms. A standard term may be given a more precise or unique usage among practitioners of a field. In many cases this causes a barrier to communication with those not familiar with the language of the field. As an example, the words RAM, bit, byte, CPU, and hexadecimal are jargon terms related to computing.