ichidan verb, transitive verb
use properly; use different things for different purposes
Implies selecting and using the right tool, word, or method according to the situation or purpose. Often used when talking about language registers, tools, or strategies.
相手によって言葉を使い分ける。
I use different language depending on who I'm talking to.
彼は三つの言語を使い分
He can use three languages properly depending on the situation.