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)

貴意[kii] your will
貴簡[kikan] your letter
貴金属[kikinzoku] precious metal
貴顕[kiken] distinguished person
貴社[kisha] (your) company

貴重[kichou] precious
貴重品[kichouhin] valuables
貴紳[kishin] noble
貴族[kizoku] noble
貴族院[kizokuin] House of Lords