An initialism is a brand name formed from the initial letters of a longer name or phrase and pronounced letter by letter.
definition
Definition of acronym (What is an acronym?)
Definition of acronym: a brand name formed from the initial letters (or groups of letters) of a longer name or phrase and pronounced as a word.
Definition of brand essence (What is a brand essence?)
A brand essence is a succinct articulation—typically three-to-five words—of the core idea(s) around which a brand is built.