CC Licenses are:
Attribution (BY): Attribution (credit) must be given to the copyright holder of the work
Noncommerical (NC): The work cannot be used for financial gain.
No Derivatives (ND): The work cannot be adapted and shared.
Share Alike (SA): if the work is adapted, it must be shared under the same license.
The 4 elements in combination make up the 6 CC Licenses.
Note: All CC licenses require that attributiont be given, so they all start at CC BY.
CC0 (CC Zero) is a public domain dedication tool that allows copyright holders to waive their copyright of a work and dedicate it to the public domain
Note: In jurisdictions where this is not allowable by law, CC0 provides legal code that allows users to use the work in any way they like anywhere in the world. In addition, the tool includes a promise that the creator will not assert copyright over the work.
Authors/creators who retain copyright of their work can choose to apply a CC License depending on the types of uses they want to allow.
It is the combination of four elements, Attribution, Noncommercial, Share Alike and No Derivatives, that determines those uses. .
Creative Commons Australia has a handy flow chart to help decide on which license meets your needs.
For a deeper dive into the consequences of choosing particular elements, see the license-specific restrictions and obligations section of A Practical Guide to Using Creative Commons Licenses.
If you are including a collection or adaptation or remix of CC-licensed resources, please see Creating collections and adaptations using Creative Commons (CC) licensed works.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.