How to clarify function of save button? 'Save and close' vs 'Save and exit'

1. What does save and exit mean?
2. What does the save button do?

What does save and exit mean?

The Save and Exit feature essentially pauses the timer when students click the Save and Exit button, and they will be allowed to pick up right where they left off.

What does the save button do?

Save is writing data to a storage medium, such as a floppy disk, CD-R, USB flash drive, or hard drive. The save option is found in almost all programs commonly under the "File" drop-down menu or through an icon that resembles a floppy diskette.