国民【こくみん】
people (of a country), nation, citizen, national, Democratic Party for the People
国家【こっか】
state, country, nation
国連【こくれん】
United Nations, UN
外国【がいこく】
foreign country
国会【こっかい】
National Diet, legislative assembly of Japan (1947-), Imperial Diet, legislative assembly of Japan (1889-1947), legislative assembly, parliament, congress
国内【こくない】
internal, domestic
外国人【がいこくじん】
foreigner, foreign citizen, foreign national, alien, non-Japanese
全国【ぜんこく】
the whole country
国際【こくさい】
international, diplomatic intercourse
中国【ちゅうごく】
China, Chūgoku region (western part of Honshu comprising the prefectures of Okayama, Hiroshima, Yamaguchi, Tottori and Shimane), central part of a country, main region, province of the second lowest rank (ritsuryō system)
国防【こくぼう】
national defence, national defense
先進国【せんしんこく】
advanced (developed) country, advanced nations
大国【たいこく】
large country, major nation, great power, province of the highest rank (ritsuryō system)
国立【こくりつ】
national, founded and run by the central government
国際的【こくさいてき】
international, worldwide, cross-border, cosmopolitan
国籍【こくせき】
nationality, citizenship, nationality (ship, airplane, etc.), registration, flag
国境【こっきょう】
border (between countries), national border
国交【こっこう】
diplomatic relations
国営【こくえい】
government management, state management
帰国【きこく】
return to one's country, return to one's hometown