diff --git a/_data/glossary/image.yaml b/_data/glossary/image.yaml
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+++ b/_data/glossary/image.yaml
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+id: image
+name: Image
+tags:
+- fundamental
+short-description: >
+  Stored instance of a container that holds a set of software needed to run an application.
+long-description: >
+  A way of packaging software that allows it to be stored in a container registry, pulled to a local system, and run as an application. Meta data is included in the image that can indicate what executable to run, who built it, and other information.
+
diff --git a/_data/glossary/replication-controller.yaml b/_data/glossary/replication-controller.yaml
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+id: replication-controller
+name: Replication Controller
+tags:
+- fundamental
+short-description: >
+  Kubernetes service that ensures a specific number of instances of a pod are always running.
+long-description: >
+  Will automatically add or remove running instances of a pod, based on a set value for that pod. Allows the pod to return to the defined number of instances if pods are deleted or if too many are started by mistake.
+