司会者

1. Origins, structure, and basic meaning

• Structure: 司会者(しかいしゃ) combines 司会, conducting an event's proceedings, with 者, person.
• Basic usage: It denotes the host or moderator who announces the opening and keeps questions and discussion moving.

2. Common pitfalls and similar expressions

• A different role from 主催者
  • 主催者(しゅさいしゃ) is the party organizing and hosting the event. 司会者 conducts the proceedings; one person may hold both roles, but the words emphasize different responsibilities.