The term 'on the same side' can be expressed in three different ways: ALLIED (6 letters), Teamed (6 letters), and FRIENDLY (8 letters). ALLIED refers to two or more nations or groups that are formally united in a military alliance. Teamed is used to describe two or more people who are working together as a team. Finally, FRIENDLY is used to describe two or more people who have a good relationship with each other. All three terms refer to people or groups that are on the same side.