- national defensethe military forces and systems a country uses to protect its land, sovereignty, and people from foreign aggression
- 科 nounabbreviation of 科学 科學sciencescience; scientific knowledge; a system of knowledge about the laws of nature, society, and thought
- 工 nounabbreviation of 工业 工業industryindustry; manufacturing sector
- 委 nounabbreviation of 委员会 委員會committeecommittee; commission; a body of people appointed or elected for a specific function or to lead an organization