The word 'culture' has different meanings depending on the context it arises in. In biology it can mean a specially grown bacteria. In archaeology it means a identifiable artefacts or structures, such as distinctive pottery, tools or adornment. Anthropology takes the archaeological definition further, and adds distinctive behaviours and practices, such as bride-price or dowry, inheritance patterns or religious adherence.
When applied to society culture then becomes much less easy to define, and in fact is easier to express by the way that it's used to exclude 'others'. That might be from your gang, from your golf club, or from your art gallery.
So really Estelle we need to know more about the background to your question, to answer it in any greater depth.