General Synonyms:
* Technical language
* Slang
* Cant
* Argot
* Vocabulary
* Terminology
* Lingo
* Dialect
* Idiom
* Parlance
* Vernacular
More Specific Synonyms:
* Shop talk: (for specific fields or industries)
* Buzzwords: (trendy or overused terms)
* Gobbledygook: (unintelligible jargon)
* Doubletalk: (deliberately confusing jargon)
* Acronyms: (words formed from the first letters of a phrase)
* Technical terms: (specialized terms within a field)
* Trade language: (language specific to a particular profession)
The best synonym to use will depend on the specific context. For example, "technical language" is a good synonym for jargon when discussing scientific or medical fields, while "slang" is a better choice for informal, everyday language.