I mention this term upfront to save irate letters from purists who decry the use of slang terminology due to problems it can create. My purpose in presenting the following is to make newcomers to the field aware of some terms they never learned in school. Similarly, those who are experienced in the field in another country may doubt their command of English when these terms pop up.
As any linguist will tell you, language is continually evolving from usage as people adapt to improve its perceived usefulness. The term ‘app’ for the word application is a contemporary example of this. The following terms are from a list of dozens that may be peculiar to a particular country or era that you may encounter.