- 美国 美國 proper nounUnited StatesUnited States of America; USA; America
- 国家 國家 nouncountrycountry; nation; state; a political entity with defined territory, population, and government
- 航空 nounaviationthe operation of aircraft; travel or transport by air through the atmosphere
- 航天 nounspaceflightspaceflight; aerospace; navigation in outer space using spacecraft
- 局 nounofficean office; a bureau; a government department or an agency for public services; also used as a name for certain shops like a bookstore or pharmacy