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)

暗示[anji] hint
意思表示[ishihyouji] declaration of intention
開示[kaiji] disclosure (legal)
求愛誇示[kyuuaikoji] courtship display
教示[kyouji] instruction

訓示[kunji] instruction
啓示[keiji] revelation (i.e. divine revelation)
掲示[keiji] notice
掲示板[keijiban] bulletin board
誇示[koji] ostentation