He is good at writing antithetical couplets.

They cooperated to form a coalition government.

They decided to form a coalition for political reasons.

All his actions are in linkage with his thoughts.

Their actions are closely linked.

His design is refined and beautiful.

His style is becoming more refined year by year.

He was suffering from muscle contractions due to pain.

His leg suddenly underwent a spasm.

In this radiation therapy, we use röntgen to destroy cancer cells.