This is a "group tag" or the name of the site/uploader that processed and distributed this specific version of the file.

This refers to the resolution. 1080p (1920 x 1080 pixels) is Full High Definition (FHD), providing a crisp image suitable for large monitors and televisions.

This typically indicates Netflix (overlapping with the NF tag) or can sometimes refer to multi-audio/language options depending on the uploader’s naming convention. Why Do People Search for This Specific Tag?