General:
* Tradition: This is the most direct and common noun.
* Custom: This emphasizes the established practice or habit.
* Convention: This suggests a widely accepted practice or norm.
Specific:
* Heritage: This refers to the traditions passed down from previous generations.
* Folklore: This focuses on the traditional beliefs, customs, and stories of a particular culture.
* Classic: This emphasizes the timeless quality of something traditional.
Other possibilities:
* Customary practice
* Established practice
* Time-honored method
The best choice will depend on the specific situation and what you are trying to convey.