使つかい分わけ

noun, noun or participle which takes 'suru', transitive verb

proper use; using different things for different purposes

Refers to the act of choosing and using multiple items, methods, or expressions appropriately according to the situation, purpose, or context. Often implies skillful or deliberate differentiation.

• 敬けい語ごの使つかい分わけは難むずかしい。

  Using honorific language appropriately is difficult.

• 彼かれは三みっつの言げん語ごを使つかい分わ