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Here are two terms that must not be used much, even though most of you know the concept.  I mentioned them on this post of Jeffrey’s, and am responding to a comment left asking for explaination of these two terms.

Afferent coupling

• The number of types that depend on a particular type within the same assembly.

Or/Also

• The number of types outside an assembly that depend on types within the assembly.

High afferent coupling is an indication of a highly responsible type or assembly.

Efferent coupling

• The number of types that a particular type depends on within the same assembly.

Or/Also

• The number of types inside an assembly that depend on types in another assembly.

High efferent coupling is an indication of a highly dependant type or assembly.