What is Resolution of Monitor? Full HD vs 2K vs 4K

As you may know, many displays or monitors nowadays boast about having 4K UHD (Ultra HD); however, what exactly is 4K UHD, and how is it different from the Full HD we were used to seeing in the past?

720p vs 1080p vs 1440p vs 4K vs 8K - Which Should I Choose? [Simple]

Don't Buy the Wrong Resolution - 1080p vs 1440p vs 4K

What Is 2K Resolution? A Basic Definition

PSA: 4k textures does not mean made for a 4k monitor, and 1080p users will benefit just as much : r/pcmasterrace

2K or 4K? What's Better on a Gaming Monitor Screen - Viotek

What's The Difference Between WQHD, QHD, 2K, 4K, and UHD? Display Resolutions Explained

What do 720p, 1080p, 1440p, 2K, 4K, and other resolutions mean?

2K vs. 4K: What's the Difference Between These Display Resolutions? - History-Computer

What is 2k Resolution?

2K vs. 4K: What's the Difference Between These Display Resolutions? - History-Computer

What resolutions are there between FHD (1080p),2k, and 4k? - Quora