E. Barnes, Professional Gamer, Professional Gamer, Washington
Answered on May 24, 2019
60HZ and 120HZ are refresh rates. They measure the number of times per second the TV redraws the image shown on the screen. Refresh rates are measured in Hertz, which is abbreviated HZ. TV's with 120HZ are better than 60HZ because the screen is refreshed twice more, making the motion look better.
When displaying content that is 24 fps, 120HZ are better because it has the ability to play back the content and display each frame 5 times. 120HZ is better for watching content such as sports and for playing video games. Most modern TVs have this refresh rate, eliminating a decision to be made between the two.