godan verb (-su), transitive verb
Used for directing mental effort, attention, or creativity onto something. Common with nouns like 工夫, 注意, 努力, 心, 趣向.
彼は新しいデザインに工夫を凝らした。
He put a lot of ingenuity into the new design.
細部
I finished it with great attention to detail.
godan verb (-su), transitive verb
stiffen; tense up
Used for making a body part or posture rigid, often in set phrases like 肩を凝らす or 身を凝らす. Less common than sense 1.
寒さで肩を凝らしてしまった。
My shoulders stiffened up from the cold.