Someone sent me a really excellent question today, and it is actually one that I get a lot:
When we first got Google Apps for Education in our district, the term “Google Docs” was used to refer to pretty much everything in our Google accounts except for Gmail and Calendar. I have made this mistake of assuming that everyone has since been on the Google bandwagon as "fannishly" as I have, and that they would have noticed when it started being referred to as "Drive." As always tends to happen, though, I have been presented with the lesson that it is not smart to assume. Let me now point out that Docs and Drive are completely separate products, and to go one step further by attempting to explain (in a hopefully simple way) just how.
Besides these, here is also a brief explanation of the rest of your “basic” Google Apps: