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)

パターン認識[pataanninshiki] pattern recognition
確認[kakunin] affirmation
確認書[kakuninsho] certificate
誤認[gonin] misrecognition
公認[kounin] official recognition

公認会計士[kouninkaikeishi] certified public accountant
公認候補[kouninkouho] official candidate
公認候補者[kouninkouhosha] official candidate
再確認[saikakunin] reaffirmation
再度確認[saidokakunin] double check