御辞儀[ojigi] bow
威儀[igi] dignity
一儀[ichigi] an incident
儀式[gishiki] ceremony
儀式主義[gishikishugi] ritualism

儀式張る[gishikibaru] to formalize
儀式用[gishikiyou] ceremonial
儀装[gisou] ceremonial equipment
儀装馬車[gisoubasha] state carriage

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)