The Six Creative Commons Licenses
The CC-BY license states that reused work can be used for any purpose as long as it includes attribution to the creator of the original work.
The CC-SA license requires that attribution to the creator be included as well as all future licenses that are assigned to reused work must carry similar and/or compatible elements as the original license.
CC-BY-NC requires that reuse is for non-commercial purposes only and that attribution is included.
CC-BY-ND allows for work to be reused, even for commercial purposes, as long as no adaptations have been made and attribution is given to the creator of the work.
CC-BY- NC-SA requires that any reuse of a piece of work must be for non-commercial purposes and any future CC-licenses must carry the same or compatible elements and attribution must be made to the creator of the original work.
CC-BY-NC-ND is the most restrictive of the CC-licenses. This license requires that reuse must be for non-commercial purposes and any adaptations or derivatives of the work cannot be shared. Unadapted material can be reused for noncommercial purposes as long as attribution is given.
(1)
Possible Combinations for Creative Commons licenses
(3)