Docker Registry is a service that stores your docker images. It could be hosted by a third party, as public or private registry. Some of the examples are,
A Docker Repository is a collection of related images with same name which have different tags. These tags are an alphanumeric identifiers(like 1.0 or latest) attached to images within a repository.
If you like this question & answer and want to contribute, then write your question & answer and email to freewebmentor[@]gmail.com. Your question and answer will appear on FreeWebMentor.com and help other developers.