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 Scope8 documented Misconceptions
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ControlledLocalAccess — Java
One can control access to local variables using access modifiersForVariableScopeBeyondLoop — Java
The scope of variables declared in a for loop header extends beyond the loopFunctionsCannotBeImmediatelyInvoked — JavaScript
Functions cannot be called in the expression in which they are definedFunctionsMustBeNamed — JavaScript
Every function definition requires an associated nameLoopBodyScopeImpliesLoopLifetime — Java
Lifetime of variables declared in a loop body extends across all loop iterationsNoGlobalObject — JavaScript
There isn't a global objectOnlyRuntimeLibraryPackages — Java
Only the creators of the JDK can create packagesUnqualifiedNamesMustDiffer — Java
The unqualified names of different classes must be different