10^9=billion (bn)
Milliard never used.
Before 1974, in UK English billion was 10^12 and 10^9 was "thousand million" and
more rarely “milliard”.
"Milliard” remains in other European languages, e.g. Spanish millardo, German milliarde.
Source: http://blog.harwardcommunications.com/2013/05/21/the-difference-between-milliard-and-billion/
Milliard never used.
Before 1974, in UK English billion was 10^12 and 10^9 was "thousand million" and
more rarely “milliard”.
"Milliard” remains in other European languages, e.g. Spanish millardo, German milliarde.
Source: http://blog.harwardcommunications.com/2013/05/21/the-difference-between-milliard-and-billion/