This property defines the Unicodes which belongs to Ethiopic block
Characters like ሀ,ሁ,ሂ, etc. are listed under Ethiopic Block.
375 Characters are present in Ethiopic Block starting with the Unicode point U+1200 that represents the character ሀ.
Currently, as per latest version 15.0.0, Unicode supports 328 number of Block. Here are a few examples - Latin Extended E,Adlam,Aegean Numbers, etc.