以北[ihoku] north of
華北[kahoku] North China
極北[kyokuhoku] extreme north
真北[makita] due north
正北[seihoku] due north

西北[seihoku] north-west
西北西[seihokusei] west-northwest
東西南北[touzainanboku] east, west, south and north
東北[touhoku] north-east
東北人[touhokujin] Northeastener

一門[ichimon] family
陰門[inmon] (female) genitalia
開門[kaimon] opening gate
凱旋門[gaisenmon] arch of triumph
冠木門[kabukimon] gate with a crossbar

関門[kanmon] barrier
玉門[gyokumon] beautifully decorated gate (euph. for female genitalia)
桑門[soumon] monk
軍門[gunmon] camp gate