Open Access (OA) refers to digital, freely accessible research or articles that are not restricted in their access or use by licenses.
OA is a label typically applied to journals, articles, and other research publications.
Publishing OA does not relinquish all rights but typically retain some rights through a Creative Commons License.
Creative Commons is a license applied to a work instead of copyright. There are four conditions: Attribution (by), Share Alike (sa), Non-commercial (nc), and No-derivatives (nd). These conditions can be combined by the creator or author of a work to license the work with some rights retained. Works licensed with a Creative Commons license can be linked to, and used in a course in a way that does not violate the license conditions.
Public Domain refers to works that are not licensed under copyright or Creative Commons. This is typically because:
Open Educational Resources (OER) are freely available educational materials, including media and textbooks, that are openly licensed, typically with a Creative Commons license or in the Public Domain. Check more for more OER information coming soon.