ハチ公[hachikou] statue of Hachiko (a dog) at Shibuya station
郭公[kakkou] common cuckoo (Cuculus canorus)
株式公開[kabushikikoukai] stock offering (to the public)
蒲公英[tanpopo] dandelion (esp. species Taraxacum platycarpum)
官公庁[kankouchou] government administration office

丸公[marukou] official price
勤め奉公[tsutomeboukou] apprenticeship
公平[kinpira] chopped burdock root (and sometimes carrot) cooked in sugar and soy sauce
公孫樹[kousonju] ginkgo (Ginkgo biloba)

其奴[soitsu] that person (guy, fellow)
何奴[doitsu] who?
黒奴[kokudo] black person
守銭奴[shusendo] miser

奴隷[dorei] slave
農奴[noudo] serf
売国奴[baikokudo] traitor (to one's country)
彼奴[aitsu] he

下婢[kahi] servant girl
侍婢[jihi] lady-in-waiting
僕婢[bokuhi] male and female servants
奴婢[dohi] servant
一盗二婢[ittounihi] The most thrilling types of sexual relationship for a man are, first, stealing someone's wife and, second, with a maidservant

私奴婢[shinuhi] privately-owned slave
官奴婢[kannuhi] government-owned slave
公奴婢[kunuhi] government-owned slave
老婢[rouhi] old housemaid