What is the synonym of word culture?

There isn't one single perfect synonym for "culture" because it has a lot of different meanings. Here are some possibilities, depending on the context:

For society and way of life:

* Civilization

* Society

* Lifestyle

* Traditions

* Customs

* Values

* Beliefs

For art and learning:

* Refinement

* Sophistication

* Education

* Enlightenment

* Arts

* Literature

For growing something:

* Cultivation

* Farming

For bacteria and other microorganisms:

* Growth

* Development

For a specific group or organization:

* Community

* Group

The best synonym for "culture" will depend on the specific context of the sentence.