Synonyms: D.C., DC, District de Columbia, District of Columbia, Distrito de Columbia, Kolumbijos apygarda, Okrug Kolumbija, Washington D.C., Washington DC, Washington D.C., keolleombia teugbyeolgu, washinton D.C., washinton・koronbia te bie qu, wosingteon D.C., wosingteon DC, Округ Колумбия, ワシントン D.C., 워싱턴 D.C., 워싱턴 DC