Geared steam locomotive
A geared steam locomotive is a type of steam locomotive which uses gearing, usually reduction gearing, in the drivetrain, as opposed to the common directly driven design.
Naming of British railway rolling stock
Since the invention of the very first railway steam locomotive in 1804, railway companies have applied names to their locomotives, carriages and multiple units. Numbers have usually been applied too, but not always; the Great Western Railway only applied names to its own broad gauge locomotives (though numbers were given to such locomotives that it inherited from elsewhere).