The term "Axis Powers" is often used to refer to the alliance between Germany, Italy, and Japan during World War II. However, there are several synonyms that can also be used to refer to this same group. One such synonym is the "Tripartite Pact Powers," which refers to the formal agreement signed between the three nations in September 1940. Other terms that can be used to describe the Axis Powers include the "Rome-Berlin-Tokyo Axis," which highlights the three countries' respective capitals, and the "Axis Alliance," which simply refers to the political and military alliance formed between the three nations.