公示|こうじkouji[0]heiban (flat)

1. noun, suru verb, transitive verbpublic announcement; official notice; edict

• Synonym公表こうひょうWrittenWritten/formal prose. Making information public, as in 「調査結果を公表」; use it for releasing information, while 「公示」 is reserved for official notices, above all elections.
• Synonym発表はっぴょうNeutralThe most general word for announcing or releasing something, as in 「合格発表」; not limited to official bodies, so it fits far more situations than 「公示」.
• Synonym告示こくじWrittenWritten/formal prose. Official public notices, as in 「告示日」; in elections it tends to refer to local election announcements, versus the national-election 「公示」.
• Synonym告知こくちNeutralNeutral. Notifying or informing, as in 「がん告知」 or 「イベントの告知」; unlike 「公示」 it is not limited to official announcements.
• Synonym布告ふこくWrittenWritten/formal prose. An edict or proclamation, as in 「宣戦布告」; tends to be used for the state announcing major decisions.
• Synonym公布こうふWrittenWritten/formal prose. Official promulgation, as in 「法律の公布」; its object is laws and regulations, whereas 「公示」 covers official notices generally.
• Synonym発布はっぷWrittenWritten/formal prose. Promulgation of a constitution or law, as in 「憲法発布」; has a historical flavor, unlike the current official notices of 「公示」.
• SynonymアナウンスNeutralLoanword for a formal announcement to many people, usually spoken over a PA system but sometimes written, as in 「車内アナウンス」.
• Synonym宣布せんぷWrittenWritten/formal prose. Proclaiming and spreading something, as in 「教義を宣布」; typically about religious doctrine, a much narrower use than 「公示」.
• SynonymアナウンスメントNeutralLoanword for a public announcement, but rare in everyday use; 「アナウンス」 is what people normally say.
• Related宣言せんげんWrittenWritten/formal prose. A declaration, as in 「独立宣言」; centers on stating a position or policy, not on official public notices.
• Related掲載けいさいWrittenWritten/formal prose. Carrying or printing something in a publication or site, as in 「雑誌に掲載」; about published content, not official notices.
• Related社告しゃこくWrittenWritten/formal prose. A formal notice issued by a company or newspaper, as in 「社告を出す」; typically seen on the pages of a newspaper.
• Related広告こうこくNeutralAn advertisement, as in 「新聞広告」; its aim is promotion, though public bodies place them too, while 「公示」 is a formal official notice.
• Relatedお達しおたっしWrittenWritten/formal prose. A notice or order handed down from a superior to those below; also an Edo-period shogunate decree. Directed downward, unlike a public 「公示」.
• Related公刊こうかんWrittenWritten/formal prose. Publishing something for the general public; applies to printed works, not official notices like 「公示」.
• Related布達ふたつWrittenWritten/formal prose. An office or superior conveying decisions to subordinates or concerned parties; also a pre-1886 (early Meiji) administrative order.
• Antonym秘密ひみつNeutralA secret; the opposite of 「公示」, which is about openly notifying the public.
• Antonym非公表WrittenWritten/formal prose. Not made public; the direct opposite of the public disclosure that 「公示」 implies.

Use 「公示」 for official notices issued by public authorities, above all the formal start of a national election, as in 「衆院選の公示」 or 「公示地価」. To say information is made public, 「公表」 is the usual choice; local elections take 「告示」 instead. 「発表」 and 「告知」 are the general everyday words for announcing or informing. Other terms are narrower: 「布告」 for state proclamations, 「公布」 for laws, 「宣言」 for declarations of intent, and 「アナウンス」 for broadcast announcements. The opposites are 「非公表」 and 「秘密」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 公こうの機関きかんが、一般いっぱんの人ひとに示しめし知しらせること。