convention
//kənˈvɛnʃən//
Noun
conventionSingular
conventionsPlural
1
A large formal meeting or assembly of people with a shared interest, profession, or purpose
She attended the annual medical convention in Tokyo.
2
A way of doing something that is widely accepted and followed by custom or agreement
It's a convention to shake hands when you meet someone for the first time.
3
A formal agreement or treaty between countries or groups
The Geneva Convention protects the rights of prisoners of war.
4
An established technique or practice in art, literature, or theater
Breaking conventions in art can lead to innovative new styles.