Jargon :
Jargon is like a type of shorthand between member of particular group of people, often words are meaningless outside of certain context.Examples :
There are three jargon related to Military and Internet.
1) BP - Blood Pressure
2) LES - Leaves and earning Statement
3) TD - Temporary Duty
Abbreviations:
A shortened form of an expression, usually followed by a period and used to represent the whole word.
Examples :
Few common examples are given here.
1) B.A - Bachelor of Arts
2) ASAP- As soon as Possible
3) PA - Personal Assistant
Acronyms:
An acronyms is a pronounceable word formed from the first letter or first few letters of each word in a phrase or title.
Examples :
Here are few examples related to acronyms.
1) RADAR - Radio detecting and Ranging
2) UNICEF - The United Nations International Children's Emergency Fund.
3) BBC - British Broadcasting Corporation