Google is trying really hard to educate business owners to validate their business listings in Google Maps. If every business owner did this, it would solve a lot of issues for Google. That being said, Google just announced in a Google Maps Help thread that they released a new glossary named Understanding Your Local Business Center Account.
The glossary has the following 15+ terms defined for people who are new to the Local Business Center:
ActiveAwaiting next updateAwaiting verificationDeleteDisapprovedEditFlaggedImpressionsNot currently showingProcessingRequest another letterSuspendedThe PIN you entered is invalidValidate by mailValidate by phoneViews
To access the Google Local Business Center, go to google.com/local/add.
Forum discussion at Google Maps Help.