関門 (かんもん)barrier; checkpoint; gateway

関門, its kanji, and other words that share them.Open this graph

Kanji in 関門

機関きかんengine
関係かんけいrelation; relationship
関係者かんけいしゃperson concerned; people involved (in an event)
関心かんしんconcern; interest
関連かんれんrelation; connection
関せきbarrier; gate
関税かんぜいtariff (import tax); duty
関西かんさいKansai; region consisting of Osaka, Kobe, Kyoto and surrounding prefectures
部門ぶもんdivision (of a larger group); branch
専門せんもんspeciality; specialty
専門家せんもんかspecialist; expert
門もんgate
専門学校せんもんがっこうvocational school; technical school
名門めいもんnoted family; noble family
入門にゅうもんentering an institution; beginning training
専門店せんもんてんspecialist shop; shop specializing in a few types of product

See how 関門 connects to the rest of Japanese.