本省|ほんしょうhonshou[1]atamadaka (head-high)

1. nounministry proper; home office; head office
2. nounthis ministry; this department

• Synonym本部ほんぶNeutralHeadquarters; the broadest term of the group, used by companies and organizations alike.
• Related本局ほんきょくNeutralMain office, used for post offices, telecoms and TV stations. 「本省」 is a central ministry's headquarters and can also serve as a self-reference meaning 'this ministry'.
• Related本署ほんしょNeutralPolice or fire headquarters, as opposed to local stations.
• Related中央局WrittenWritten/formal prose: a bureau at the center; an explanatory term, rarely used.
• Antonym出先でさきNeutralA branch or outpost sent out from headquarters; the opposite of the central 「本省」.

Use 「本省」 for a central ministry's headquarters, as in 「外務省本省」; it can also mean the ministry itself. Companies and groups use 「本部」; post offices and broadcasters 「本局」; police and fire headquarters 「本署」; branches are 「出先」.

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

1. 各かく官庁かんちょうを管轄かんかつする中央ちゅうおう省庁しょうちょう。
2. この省しょう。当省とうしょう。