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)

ご苦労様[gokurousama] thank you very much for your ...
御苦労さん[gokurousan] I appreciate your efforts
慰労[irou] recognition of services
過労[karou] overwork
過労死[karoushi] death from overwork and mental stress

気苦労[kigurou] worry
漁労[gyorou] fishing
共労者[kyourousha] coworker
勤労[kinrou] labor
勤労階級[kinroukaikyuu] salaried class

委ねる[yudaneru] to entrust (a matter) to
委員[iin] committee member
委員会[iinkai] committee
委員長[iinchou] committee chairman
委曲[ikyoku] details

委細[isai] details
委細面談[isaimendan] details when I see you
委託[itaku] consign (goods (for sale) to a firm)
委託生[itakusei] scholarship student sent by government office or business
委任[inin] charge