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

行けない[ikenai] wrong
行る[yaru] to send
オリエント急行[orientokyuukou] Orient express
カ行[kagyou] classification for Japanese verb with the dictionary form ending in "ku"
ガ行[gagyou] classification for Japanese verb with the dictionary form ending in "gu"

サ行[sagyou] classification for Japanese verb with the dictionary form ending in "su"
ザ行[zagyou] classification for Japanese verb with the dictionary form ending in "zu"
スパイ行為[supaikoui] espionage
タ行[tagyou] classification for Japanese verb with the dictionary form ending in "tsu"
ダ行[dagyou] classification for Japanese verb with the dictionary form ending in "dzu"