Jargon and Slang
Jargon sometimes is wrongly confused with slang and people often take it in the same sense but a difference is always there.
Slang is a type of informal category of a certain language developed within a certain community and consists of words or phrases whose literal meanings are different than the actual meanings. Hence, it is not understood by people outside of that community or circle. Slang is more common in spoken language than written.
Jargon, on the other hand, is broadly associated with a subject, occupation or business that makes use of standard words or phrases frequently comprising of abbreviations e.g. HTH, LOL. However, unlike slang, its terms are developed and composed deliberately for the convenience of a specific section of society. We can see the difference in two sentences given below.