Scope
The scope of a name is the region of source code in which the name can be used.
Related concepts: NameLifetime
Closest Wikipedia entry: Scope (computer science)
Misconceptions about Scope7 documented Misconceptions
Check Yourself
ControlledLocalAccess — Java
One can control access to local variables using access modifiers
ForVariableScopeBeyondLoop — Java
The scope of variables declared in a for loop header extends beyond the loop
LoopBodyScopeImpliesLoopLifetime — Java
Lifetime of variables declared in a loop body extends across all loop iterations
UnqualifiedNamesMustDiffer — Java
The unqualified names of different classes must be different
FunctionsCannotBeImmediatelyInvoked — JavaScript
Functions cannot be called in the expression in which they are defined
FunctionsMustBeNamed — JavaScript
Every function definition requires an associated name
NoGlobalObject — JavaScript
There isn't a global object