Depends on if using historical definitions or "modern" since PC era definitions.
There are many different definitions of resolution. DPI or ppi is one and X and Y pixel count is a newer one (last 40 years) that was only useful when displays were all CRTS and about 75 to 100 dpi (96 dpi was assumed).
Quote:
Display resolution, the number of distinct pixels in each dimension that can be displayed on a display device
Graphic display resolutions, a list of particular display resolutions
Distance resolution, the minimum distance that can be accurately measuredImage resolution, a measure of the amount of detail in an image
Optical resolution, the capability of an optical system to distinguish, find, or record details
Printing resolution*, the number of individual dots a printer can produce within a unit of distance (e.g., dots per inch)
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https://en.wikipedia.org/wiki/Resolution
* By analogy, Screen or panel (or really Display Resolution) is ppi, DPI or similar. 1920x1080 is the graphics resolution used for HDTV. It's not High Definition at 72" at 5' viewing distance. What is often called Display resolution is really Graphics Resolution.
I'm not denying people and advertising and specs commonly use "resolution" to apply to X & Y pixel count. The point I was making is that on it's own
without a screen size it's not really a "resolution" in the mathematical or optical sense or comparative for image quality sense.