公式【こうしき】
official, formal, formula (e.g. mathematical), official (social media) account (of a company, organization, etc.)
公演【こうえん】
public performance, exhibition in a foreign country
公開【こうかい】
opening to the public, making available to the public, exhibiting, unveiling, release (of a film, information, etc.), disclosure, publication
公園【こうえん】
(public) park
公共【こうきょう】
public (facilities, service, etc.), communal
公明【こうめい】
fairness, openness, impartiality, Komeito (Japanese political party)
公判【こうはん】
public hearing, trial
公認【こうにん】
official recognition, official approval, certification, authorization, authorisation
公害【こうがい】
pollution, public nuisance, contamination
公表【こうひょう】
official announcement, proclamation
公務員【こうむいん】
government worker, public servant, civil servant
公立【こうりつ】
public (institution)
公約【こうやく】
public commitment, public promise, campaign pledge, official vow
公邸【こうてい】
official residence
主人公【しゅじんこう】
protagonist, main character, hero, heroine, head (of a household), proprietor (of a store)
公聴会【こうちょうかい】
public hearing
公算【こうさん】
probability, likelihood
公正【こうせい】
justice, fairness, impartiality
公団【こうだん】
public corporation, public housing
公募【こうぼ】
public appeal (e.g. for contributions), public advertisement (of a post), open recruitment, public offering (of securities)