Why is the time-lapse photography of mobile phone not called time-lapse photography, which obviously shortens the time?

There is a professional name here. Time-lapse photography shortens the video duration through long-term photography and acceleration, but it shortens the video duration and takes longer to shoot, so it is called time-lapse photography, which has a professional name. Time-lapse photography shortens the video duration and accelerates the video duration through long-term photography, but the actual shooting time is longer, so it is called time-lapse photography, which has a professional name. Time-lapse photography is to shorten the video duration through long-term photography and acceleration, but it shortens the video duration and the actual shooting time is longer, so it is called time-lapse photography and has a professional name. Time-lapse photography is to shorten the video duration through long-term photography, but it shortens the video duration and the actual shooting time is longer, so it is called time-lapse photography and has a professional name. Shortening the video duration by speeding up only shortens the video duration, but the actual shooting time is longer, so it is called time-lapse photography, which has a professional name. Time-lapse photography is to shorten the video duration through long-term photography and acceleration, and it only shortens the video duration, but the actual shooting time is longer, so it is called time-lapse photography, which shortens the video duration through long-term photography and acceleration.