Juxtaposition of voice-over and visuals is a commonly used technique in film and television production. It involves the use of contrasting or complementary elements to create a powerful narrative effect. Some possible synonyms for this technique include creative combinations of audio and visuals, multimedia integration, audio-visual harmony, and multimedia storytelling. These techniques help to enhance the audience's understanding of a story by presenting multiple perspectives and points of view. They can also be used to create tension or emotional impact, or to highlight important themes or motifs. Ultimately, the juxtaposition of voice-over and visuals is a powerful tool for engaging viewers and conveying complex ideas in a dynamic and compelling way.