differences between save and save as?

The main difference between "Save" and "Save As" is how they handle the saving process:

1. Save: When you click on the "Save" option, it updates the existing file with any changes you have made since the last save. It overwrites the previous version of the file with the current one, without creating a new file. If you have not saved the file before, "Save" will prompt you to choose a location and name for the file.

2. Save As: "Save As" allows you to save the file with a new name, location, or file format. It creates a duplicate copy of the file, preserving the original version. This option is useful when you want to create a new version of the file while keeping the original intact. It also allows you to save the file in a different format, such as converting a Word document to a PDF.

In summary, "Save" updates the existing file, while "Save As" creates a new file with the option to change the name, location, or format.