同盟 (tóng méng): alliance

During World War II, the United States, Britain, and the Soviet Union formed an alliance to fight together against Germany and Japan.

In order to win the election, the two small parties decided to form an alliance and put forward a joint candidate.

Price alliances between companies are often hard to maintain, because there is always someone who wants to secretly cut prices to grab customers.

Although these two countries have had conflicts in history, facing a common threat, they still chose to form a military alliance.