航空

航空 refers to the transport of people or goods by air, commonly known as air travel or aviation. It specifically relates to commercial flights and air transportation systems.

The character 航 (háng) means 'to sail' or 'to travel,' often used in the context of long-distance travel, while 空 (kōng) means 'sky' or 'space.' Together, they form a term that emphasizes movement through the air, distinguishing it from land or sea travel.

航空 is widely used in contexts such as airline companies, airports, flight bookings, and air traffic control. It is an essential part of global transportation infrastructure and plays a crucial role in international business and tourism.