Copyright
A set of rights granted to the author of a piece of work
Public Domain
Not protected by copyright laws because the copyright could be expired,the work was created using public money, or it can be donated.
Freewear
Copyrighted work that you can use, copy, or give away for free.
Sharewear
Information you can copy, share, and use stuff for free but only for a limited time.
All Rights Reserved
Only allows purchaser to use software according to the details spelled out in the license agreement.
Open Source
Software that includes the source code with the idea that people can improve it.