applicability
Refers to whether a rule, method, or principle can be applied to a particular case. Often used in technical, legal, or academic contexts.
We need to examine the applicability of this rule.
The applicability of the new treatment is confirmed through clinical trials.
Compound of 適用 (てきよう, 'application') and 性 (せい, '-ity, -ness'), forming a noun meaning 'applicability'.