Syncretism

Syncretism is a word that describes a process of combining ideas from different systems of thought to form a new system of thought. The word is used in philosophy, in the history of religions, but also linguistics, literary studies and psychology. When talking about culture, syncretism is auto combining several cultures into a new form of culture and famous syncretism figures are hermenubius and Serpias and I Zeus

The gods Persephone-Isis and Hades-Serapis, an example of Greco-Egyptian syncretism