This property defines the Unicodes which belongs to Khmer block
Characters like ក,ខ,គ, etc. are listed under Khmer Block.
117 Characters are present in Khmer Block starting with the Unicode point U+1780 that represents the character ក.
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.