军队 (jūn duì) literally combines 军 (jūn), meaning 'army' or 'military', and 队 (duì), meaning 'team', 'unit', or 'formation'. Together, they form a formal, collective noun referring to a nation’s organized armed forces — including the army, navy, air force, and sometimes other branches like the rocket force. It is a broad, institutional term used in official, news, historical, and political contexts, not for casual references to individual soldiers.

The word carries strong connotations of national defense, discipline, and state authority. It is rarely used in personal or emotional expressions — you wouldn’t say 'my army' to mean 'my group of friends'. Instead, it appears in phrases like 国家军队 (guójiā jūnduì, 'national armed forces'), 人民解放军 (Rénmín Jiěfàng Jūn, 'People’s Liberation Army'), or in discussions about military policy, history, or international relations.