Rp-Rz is for
Running End
also called the working end, this is the section of rope which you are tying with, and has not yet been incorporated into the rope pattern.
Ryu / Ryū 流
Way or method, used to describe a particular school of thought. Established rope teachers often try to describe an overarching philosophy and approach in how they tie along with a number of set ties that together form their ryū
Ryōashi Gattai Ichimonji Shibari 両足合体一文字縛り
"Both Legs together Straight-Line Binding." These ties are often referred to as mermaid ties in English.
Ryoashi sakasa zuri 両足逆さ吊り / Ryouashi zuri 両足吊り
'Both Legs inverted suspension' / Both legs suspension' Both these phrase refer to a suspension from both legs.
Ryōkyaku Gote Kakae Shibari 両脚後手抱え縛り
'hands tied up behind both legs' This tie was originally created by Akechi Denik and involves the person being tied in a chest harness, the arms being brought under the legs and tied behind the back creating a demanding spread leg tie. It is now more common for the position to be achieved by supporting the thighs, and the tie is often referred to as daruma shibari, however the name Moon Tie is gaining in popularity as a tutorial for a thigh loaded version was realised by Shibari Study under that name.
Ryōkyaku Gote Shibari 両脚後手縛り
'both legs bound with a gote' I include this tie to provide an example of the flexibility of naming when it comes to ties. The rope pattern and position in this tie is very different from Ryōkyaku Gote Kakae Shibari 両脚後手抱え縛り although elements may have visual simularties. In this tie a Gote Shibari has been used (a chest tie that goes over the arms) where as the addition of the word Kakae (hugging/holding) is significant in the other tie.
Ryoutekubi shibari 両手首縛り
'Both wrists tied together'. Although the word wrist is often used, it is actually just above the wrist that we tie to as there are lots of sensitive nerves around the wrist that are easy to damage.