recurring dominant idea in a work of a art is called

A recurring dominant idea in a work of art is called a motif. A motif is a recurring symbol, image, theme or idea that runs throughout a literary or artistic work. It helps to unify the work and convey a particular message or idea to the audience. The motif can be a physical object, a repeated action or gesture, a color, or even a sound. By repeating the motif throughout the work, the artist or author emphasizes its importance and deepens the meaning of the work.