*''CBS,'' for ''Columbia Broadcasting System''
*''KJV,'' for ''King James Version.''
They Initialisms are distinguished from ''acronyms'' in that initialisms are pronounced as individual letters, while acronyms are pronounced as if the letters spelled out a word (which they may in some cases do). The use of the word "acronym" to ''include'' initialisms is imprecise, but increasingly accepted. Both initialisms and acronyms are defined by custom; sometimes they do not strictly follow the rule of using every initial, or only the first initial. Unimportant words may be omitted. In the case of acronyms a certain amount of creativity may be employed.
*''FBI,'' for ''Federal Bureau of Investigation'''
*''TULIP,'' for Total Depravity, Unconditional Election, Limited Atonement, Irresistible Grace, and Perseverance of the Saints (the core tenets of [[Calvinism]]).
*''Roy G. Biv,'' for ''Red, Orange, Yellow, Green, Blue, Indigo, and Violet'' (the conventional description of the colors in the [[spectrum]]).
(The use of the word "acronym" to include initialisms as well as acronyms is imprecise, but increasingly accepted).
