AKA, an abbreviation for 'Also Known As,' is used to indicate an alias or alternative name by which a person, entity, or item is identified.
The term 'billion' has historically had different definitions in the USA and the UK. It once meant one million million (10^12) in the UK and one thousand million (10^9) in the USA. However, it is now almost universally accepted to mean one thousand million (10^9).
