小便をする[shoubenwosuru] to pee
穏便[onbin] gentle
音便[onbin] euphony
花便り[hanadayori] news of cherry blossom blooming conditions
簡便[kanben] handy

雁の便り[karinotayori] (a) letter
共同便所[kyoudoubenjo] comfort station
軽便[keiben] convenience
検便[kenben] stool (feces) examination
公衆便所[koushuubenjo] public lavatory

一呑み[hitonomi] swallowing in one gulp
呑口[nomikuchi] taste (of a liquid, esp. alcoholic beverages)
呑み代[nomishiro] drink money
呑む[nomu] to drink
呑み助[nomisuke] tippler

鵜呑み[unomi] swallowing (food, story)
雲呑[wantan] wonton (Chinese dumpling)
丸呑み[marunomi] swallowing whole
険呑[kennon] risky
固唾を呑む[katazuwonomu] to hold one's breath (in fear, anxiety, etc.)

ローロー船[rooroofune] roll-on-roll-off ship
宇宙船[uchuusen] space ship
下船[gesen] going ashore
荷船[nibune] freighter
貨物船[kamotsusen] freighter

艦船[kansen] (ocean) vessels
汽船[kisen] steamship
客船[kyakusen] passenger boat
巨船[kyosen] ocean liner
漁船[gyosen] fishing boat

書留郵便[kakitomeyuubin] registered mail
定形郵便物[teikeiyuubinbutsu] standard size mail
年賀郵便[nengayuubin] New Year's mail
郵政省[yuuseishou] Ministry of Posts and Telecommunications
郵政大臣[yuuseidaijin] Minister of Posts and Telecommunications

郵税[yuuzei] postage
郵送[yuusou] mailing
郵送料[yuusouryou] freight costs
郵袋[yuutai] mailbag
郵便為替[yuubinkawase] postal money order

暗雲[anun] dark clouds
闇雲[yamikumo] recklessly
いわし雲[iwashigumo] cirro-cumulus
雨雲[amagumo] rain cloud
雲隠れ[kumogakure] disappearance

雲影[unei] cloud shape
雲海[unkai] sea of clouds
雲間[kumoma] rift between clouds
雲形[kumogata] cloud formations