What does chainsaw scare mean?

Two men, one doesn't respect life, the other doesn't cherish his family, and he is not responsible for the patients, so john kramer decided to punish them and let them know the value of life, because he himself is terminally ill.

Introduction-

When young Adam gradually woke up from a coma, he found himself locked in a shabby basement, and not far from him, another bewildered man, Dr. Lawrence, was locked. On the floor between them, there is a man who has been dead for a long time. The body was covered in blood with a.38 caliber pistol in his hand. Neither Adam nor Lawrence knows how they came to this place. Just as they were wondering, the automatic recording tape left in the house rang, and the tape ordered Lawrence to kill Adam within eight hours, otherwise they would both be killed, and Lawrence's wife Alison and daughter would also be killed.

At this time, the two suddenly realized. They recalled the murder that the local police detective Tapp was investigating recently. They realized that they had become the plaything of a perverted murderer nicknamed "Sword Saw" and were about to be the next victims to be killed. With only a few hours left, they must overcome their fears and come up with this elaborate trap. The murderer left only some clues and two crude hand saws on the floor. ...

Extended data:

Role introduction—

1, cary elwes plays Lawrence Gordon.

Brain tumor doctor, who only thinks about work and reputation, has no intention to take care of patients and family members, and is still hanging out, so he was arrested and became the key test object of bathroom game. ?

2. leigh whannell plays Adam Steinheit.

This young photographer, a guy who has no respect for life, is responsible for collecting money to follow others, taking pictures and collecting illegal information, but this time he was locked in the bathroom with Gordon he photographed. ?

3. Danny Glover plays David Tapp.

The homicide detective in charge of handling Jigsaw's case, after being physically and mentally injured in this case, became obsessed with taking Gordon as a suspect.

4. Mike Butters plays Paul Lacey?

A middle class, one of Jigsaw's early victims, lived a good life, but failed in his attempt to cut his wrist and finally died in the maze of barbed wire.

5. Paul Gleiter plays Mark Wilson?

A professional swindler, one of Jigsaw's early victims, pretended to be ill at home to escape from work, defrauded medical insurance, and finally died in a digital cage.