Applicability :: Applicability (n.) The quality of being applicable or fit to be applied.
Applicable :: Applicable (a.) Capable of being applied; fit or suitable to be applied; having relevance; as, this observation is applicable to the case under consideration..
Inapplicability :: Inapplicability (n.) The quality of being inapplicable; unfitness; inapplicableness.
Inapplicable :: Inapplicable (a.) Not applicable; incapable of being applied; not adapted; not suitable; as, the argument is inapplicable to the case..