How to say "inauguration" in Japanese

• 就任しゅうにんJLPT N2approx.Common
  noun, suru verb, intransitive verbCovers the inauguration of a person into office: a president, minister, or newly appointed official taking up a post. This is the word for the inaugurations of presidents and other officeholders.
  彼かれは大統領だいとうりょうに就任しゅうにんした。↗

  He was inaugurated as President.
• 発足ほっそくJLPT N1approx.Common
  noun, suru verb, intransitive verbUsed when an organization, administration, or project gets under way: the launch or founding of a new government, committee, or company. The inauguration of a new cabinet or administration takes this word.
  安倍あべ内閣ないかくは、第だい９０代だいの内閣総理大臣ないかくそうりだいじんに指名しめいされた安倍あべ晋三しんぞうが２００６年ねん９月がつ２６日かに発足ほっそくさせた内閣ないかくである。↗

  The Abe Cabinet is the Cabinet inaugurated on September 26, 2006 by Shinzo Abe, who was appointed as Japan's 90th Prime Minister.
• 草創そうそうCommon
  noun, suru verbPoints to the rough, pioneering earliest stage of an enterprise rather than a formal opening; for an actual inauguration event it is seldom the word you want.
• 開設かいせつCommon
  noun, suru verb, transitive verbCovers the establishment or opening of something set up to operate: a new office, facility, or service. An inauguration in the sense of opening such a thing takes this word.
  ７月がつ１０日にちより札幌さっぽろ支店してんを開設かいせついたします。↗

  On July 10, we will open our Sapporo branch.
• 開場かいじょうCommon
  noun, suru verb, intransitive verbSpecifically the inauguration of a new building or facility: the moment a new hall or venue first opens its doors.

Use 就任 for a person taking office, 発足 for an organization or administration starting up, 開設 for opening a facility or service, 開場 for a new building, and 草創 only for the earliest beginnings of an undertaking.

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

• 就任しゅうにんassumption (of office)
• 発足ほっそくstarting
• 草創そうそうbeginning
• 開設かいせつestablishment
• 就任式しゅうにんしきinauguration
• 開場かいじょうinauguration (of a new building, facility, etc.)