しゅうにん就任shuunin
1.

The act of formally taking on a position or role within an organization, often marked by a ceremony or official event.

2.

The process of assuming a specific job or responsibility, typically in a professional or governmental context, which indicates a transition into that role.

3.

The commencement of duties and responsibilities associated with a particular title or office, following an appointment.

Example:

彼は大統領に就任した。

しゅうにんえんぜつ就任演説shuunin'enzetsu
1.

A formal address delivered by someone who has recently assumed a position of authority, outlining their goals and intentions for their new role.

2.

A ceremonial speech given at the beginning of a term in office, often reflecting on the past and setting the vision for the future.

3.

An official statement presented during a transition of power, aimed at reassuring the public and rallying support for upcoming initiatives.

しゅうにんしき就任式shuuninshiki
1.

A formal event where an individual officially takes on a new position or role, often marked by speeches and rituals celebrating the occasion.

2.

A ceremonial gathering to mark the beginning of a person's tenure in a significant office, typically involving public announcements and symbolic acts.

3.

An official ceremony during which an appointed leader is welcomed and recognized by the public, emphasizing the importance of the role being assumed.