diff --git a/modules/registry-common-terms.adoc b/modules/registry-common-terms.adoc
new file mode 100644
index 0000000000..1b85a61093
--- /dev/null
+++ b/modules/registry-common-terms.adoc
@@ -0,0 +1,54 @@
+// Module included in the following assemblies:
+//
+// * registry/index.adoc
+
+:_content-type: REFERENCE
+[id="openshift-registry-common-terms_{context}"]
+= Common registry terms
+
+This glossary defines the common terms that are used in the registry content.
+
+container::
+Lightweight and executable images that consist software and all its dependencies. Because containers virtualize the operating system, you can run containers in data center, a public or private cloud, or your local host.
+
+Image Registry Operator::
+The Image Registry Operator runs in the `openshift-image-registry` namespace, and manages the registry instance in that location.
+
+image repository::
+An image repository is a collection of related container images and tags identifying images.
+
+mirror registry::
+The mirror registry is a registry that holds the mirror of {product-title} images.
+
+namespace::
+A namespace isolates groups of resources within a single cluster.
+
+{product-title} registry::
+{product-title} registry is the registry provided by {product-title} to manage images.
+
+pod::
+The pod is the smallest logical unit in Kubernetes. A pod is comprised of one or more containers to run in a worker node.
+
+private registry::
+A registry is a server that implements the container image registry API. A private registry is a registry that requires authentication to allow users access its contents.
+
+public registry::
+A registry is a server that implements the container image registry API. A public registry is a registry that serves its contently publicly.
+
+Quay.io::
+A public Red Hat Quay Container Registry instance provided and maintained by Red Hat, that serves most of the container images and Operators to {product-title} clusters.
+
+registry authentication::
+To push and pull images to and from private image repositories, the registry needs to authenticate its users with credentials.
+
+route::
+Exposes a service to allow for network access to pods from users and applications outside the {product-title} instance.
+
+scale down::
+To decrease the number of replicas.
+
+scale up::
+To increase the number of replicas.
+
+service::
+A service exposes a running application on a set of pods.
diff --git a/registry/index.adoc b/registry/index.adoc
index 37c01d69da..cc6cd84d56 100644
--- a/registry/index.adoc
+++ b/registry/index.adoc
@@ -8,6 +8,7 @@ toc::[]
 
 {product-title} can build images from your source code, deploy them, and manage their lifecycle. It provides an internal, integrated container image registry that can be deployed in your {product-title} environment to locally manage images. This overview contains reference information and links for registries commonly used with {product-title}, with a focus on the internal image registry.
 
+include::modules/registry-common-terms.adoc[leveloffset=+1]
 include::modules/registry-integrated-openshift-registry.adoc[leveloffset=+1]
 
 [role="_additional-resources"]