A Creative Commons NonCommercial license (CC NC, CC BY-NC or NC license) is a Creative Commons license which a copyright holder can apply to their media to give public permission for anyone to reuse that media only for noncommercial activities. Creative Commons is an organization which develops a variety of public copyright licenses, and the "noncommercial" licenses are a subset of these. Unlike the CC0, CC BY, and CC BY-SA licenses, the CC BY-NC license is considered non-free. A challenge with using these licenses is determining what noncommercial use is.
https://en.wikipedia.org/wiki/Creative_Commons_NonCommercial_license