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)

比べ[kurabe] contest
と比べて[tokurabete] compared with
に比べ[nikurabe] compared to
比律賓[firippin] Philippines
亜剌比亜[arabia] Arabia

櫛比[shippi] lining up
恵比須[webisu] Ebisu (god of fishing and commerce)
丈比べ[takekurabe] comparison of statures
正比例[seihirei] direct proportion
対比[taihi] contrast