Mouth shape

The mouth shape  

This black configuration can be seen as a mouth shape. The stone is almost invariably present (see it as part of some white configuration). This shape focuses more on eyeshape than on connection. However, ...

The mouth shape  

... often the mouth shape appears due to the net created by . Because this captures the marked stone, the shape now also meets the objective of connecting Black's two strings. So the presence of the marked cutting stone changes the meaning of the shape. As a consequence ...

Eye-stealing  

... this is known as the eye stealing tesuji, whereas ...

Cut  

This is known as a severe cutting manoeuver.