jargon -
specialized technical terminology characteristic of a particular subject
expressive style,
style a way of expressing something (in language or art or music etc.) that is characteristic of a particular person or group of people or period; "all the reporters were expected to adopt the style of the newspaper"
jargon -
To utter jargon; to emit confused or unintelligible sounds.
Wikipedia
Jargon is terminology which is especially defined in relationship to a specific activity, profession, or group. 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.
OmegaWiki Dictionary
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jargon Terminology which is especially defined in relationship to a specific activity, profession, group, or event.