You know, I don’t know if you are trying to be annoying or if you truly do not know. Here is a wikipedia link for topic of device fingerprints: en.m.wikipedia.org/wiki/Device_fingerprint
The privacyguides website is generally a good resource. Sometimes, rarely, lacks a little behind in the latest and greatest. It’s not primarily a site for news anyways.
One part of your browser’s fingerprint that I find quite interesting and is easy to understand is it’s resolution. Your browser displays websites in a set resolution, say 1080x1920. This resolution is dependent of your screen’s resolution, the window size of the browser and generally everything that changes the shape anf size of the website. Firefox does not protect here, old man.