Have you tried walking to and from work every day? It can help you pretend they are different places.
You wake up and do your morning routine, then you walk around the block and start your working day when you reach your home office. Then at the end of the day walk around the block and home to mark the end of your work day.
In this context (IIRC) smart means “if this zip contains a single folder with contents, directly extract that folder, but if the zip contains files and/or folders, extract all that to a new folder named the same as the zip file”.
Some people zip folders while some people zip the files in a folder. Smart extraction just handles both automatically.