>>566154416:9 (1920×1080 i.e.) and 16:10 (1920×1200 i.e.) are the most common monitor aspect ratio's, cmiiw
the resolutions mentioned above are called 'full high definition' and are 2.1 mega pixels. terms such as 1080p or 1080i are meant for video, progressive or interlaced scans to render video to screens such as televisions.
>doubled are considered uhd, ultra high definition a.k.a. 4K or 8K UHDTV which would be 16:9.>hd would be 1280×720note that i dont want to discuss this since its a never ending discussion...