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?

Graphics display resolution - Wikipedia

FHD vs QHD vs 4K - Monitor Resolution Comparison Between 1080p, 1440p & 2160p

2K vs. 1080p: What's the Difference?

QHD vs. WQHD vs. 4K UHD - Which Resolution fits your needs best?

What Is Monitor Resolution? Resolutions and Aspect Ratios Explained - ViewSonic Library

Difference Between 1080p & 4K Resolutions Revealed

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

4K vs 1440p vs 1080p - What Monitor Resolution Should You Buy?

1080p vs. 2K: What's the Difference and Is One Better? - History-Computer

Club 3D RESOLUTIONS GUIDE

8k vs 4K UHD vs FHD vs 2k QHD vs HD

4K monitors: Everything you need to know about UltraHD PC displays

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

720p vs 1080p vs 4K vs 8K: Display Resolutions Explained

Display Resolution Explained: What is HD, FHD, QHD, 4K, 8K? - Tech - Xiaomi Community - Xiaomi