Custom
For an article on the meaning of this term in the field of law, see custom_(law).
The difference between custom and culture is subtle, yet customs generally emphasizes practices while cultures rather focus on ideas.
Customs as a plura form are a government agency that supervises exporting and impoting goods and imposes taxes.
In computing, customizing is to modify particularly interfaces of computer programs.
Custom is a common practice among people, especially depending on country, culture, time and religion.