What is dif. between acronym and abbrivation.
Occasionally, for special reasons, the second letter of a word is used, as in XML (eXtensible Markup Language), but this is deprecated. Sometimes more than one letter is included for a word, to avoid ambiguity or because they form an existing abbreviation, as in SACEUR (Supreme Allied Commander, Europe)
Contrary to what some sources say, acronyms do not have to be pronounceable words (for example FBI is spelled out when spoken, whereas NASA is not).
An abbreviation and an acronym are both shortened forms of a word, phrase or name.
Examples of acronyms:
United Nations Educational, Scientific and Cultural Organization - UNESCO
Light Amplification by Stimulated Emission from Radiation - Laser
Radio detection and ranging - Radar