国家【こっか】
state, country, nation
外国人【がいこくじん】
foreigner, foreign citizen, foreign national, alien, non-Japanese
国際【こくさい】
international, diplomatic intercourse
国連【こくれん】
United Nations, UN
国民【こくみん】
people (of a country), nation, citizen, national, Democratic Party for the People
国【くに】
country, state, region, national government, central government, home (i.e. hometown, home country), province (of Japan), land, earth
全国【ぜんこく】
the whole country
国内【こくない】
internal, domestic
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
外国【がいこく】
foreign country
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)
国籍【こくせき】
nationality, citizenship, nationality (ship, airplane, etc.), registration, flag
国立【こくりつ】
national, founded and run by the central government
先進国【せんしんこく】
advanced (developed) country, advanced nations
国防【こくぼう】
national defence, national defense
国境【こっきょう】
border (between countries), national border
国際的【こくさいてき】
international, worldwide, cross-border, cosmopolitan
大国【たいこく】
large country, major nation, great power, province of the highest rank (ritsuryō system)
国交【こっこう】
diplomatic relations
帰国【きこく】
return to one's country, return to one's hometown