ふうしゅう風習fuushuu
1.

A distinctive practice or tradition that has been passed down through generations within a specific community, often relating to everyday life or particular events.

2.

A way of behaving or conducting oneself that is commonly observed among the people of a certain region, reflecting their unique cultural heritage.

3.

A traditional manner of doing things that is specific to a locality, often established over time and recognized as an integral part of that community's identity.

Example:

その風習はすたれつつある。