Thank you for that info, Fredney, I have learned something new. I'm interested in the development of language, so I checked it out.
The difference between an acronym and initialism is that the abbreviation formed with initialisms is not pronounced as a word, rather you say the individual letters, such as FBI (Federal Bureau of Investigation), CIA (Central Intelligence Agency), and DVD (Digital Video Disk*).
While I'm here, my pet hate is the use of hack instead of tip.
The Daily Mail is forever offering hacks to make life easier.