convention; conference; rally; mass meeting
A large organized gathering of people for a shared purpose, such as a political rally, academic conference, or corporate convention.
An international academic conference will be held in Tokyo next month.
The new policy was announced at the party convention.
tournament; competition; contest; meet
A large-scale sports or game competition, such as a national championship, Olympic event, or e-sports tournament.
He won the tennis tournament.
The summer high school baseball tournament has begun.
grand event; large-scale event
A broad term for any major event, often used in promotional or descriptive contexts. Overlaps with senses 1 and 2 but emphasizes scale and importance.
This summer, grand fireworks events will be held in various places.
The city held a swimming tournament.
He competed in the national tournament.
The team won the tournament.
The international convention was held in Tokyo.
大会 refers to large gatherings like sports tournaments or mass rallies, whereas コンベンション is specifically an organized convention, trade show, or academic conference.
大会 is the broader term for a tournament, meet, or convention, and is more natural for sports events, whereas コンクール is reserved for judged performances or works.
大会 is the general word for a tournament or competition event, whereas チャンピオンシップ specifically implies a title or top-level championship is at stake.
大会 is a large-scale organized tournament or convention, while コンペ tends to be a smaller, often business- or hobby-related competition.
大会 is a large-scale tournament or convention, often bigger in scale than a typical コンペティション.
national convention; national competition; national tournament