CGI (computer-generated imagery) and practical effects are excellent examples to discuss two visual effects that have been used in popular films. CGI (Computer-Generated Imagery): CGI is a digital technique that allows filmmakers to create and manipulate visuals using computer software. It has revolutionized the film industry by enabling the creation of lifelike creatures, fantastical environments, and spectacular action sequences. Blockbuster films like "Avatar," "Avengers: Endgame," and "Jurassic Park" have showcased the immense potential of CGI in bringing imaginative worlds and breathtaking visuals to the screen. Through CGI, filmmakers can seamlessly blend live-action footage with digitally created elements, resulting in seamless integration and realistic visual experiences. Practical Effects: Practical effects refer to the physical techniques used on set to create visual illusions. They involve using real props, makeup, models, miniatures, pyrotechnics, animatronics, and other tangible methods. Practical effects have a long history in filmmaking and have been responsible for some iconic moments in cinema. From the groundbreaking creature effects in "Alien" to the mind-blowing stunts in the "Mission: Impossible" series, practical effects provide a tangible and visceral experience for both actors and audiences. Filmmakers often combine practical effects with CGI to achieve a seamless blend of real-world elements and digital enhancements.