diff --git a/project/glossary.md b/project/glossary.md
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+<!-- vim: ft=markdown colorcolumn=72
+-->
+# Glossary
+
+This glossary is a dictionary of terms defined as they are used by the
+spire/helm-charts project.  Writing the definitions of terms here helps
+to keep other documents concise and precise.  Documenting terminology
+here helps prevent misundersandings, facilitating easy onboarding of new
+team members.
+
+**Deployment**
+: A use of the Helm Charts to describe a single SPIRE cluster.
+
+**Deployment Type**
+: One of three supported deployments of the charts: Standalone, 
+Primary, or Secondary.
+
+**Federation**
+: When one cluster is configured to trust elements of another cluster
+containing a different trust domain.
+
+**Federated Deployment**
+: A Primary Deployment or Standalone Deployment that is configured
+to federate with one or more Deployments.
+
+**Primary Deployment**
+: A deployment of the Helm Charts where the cluster's purpose is to
+provide certificates to Secondary Deployments.
+
+**Secondary Deployment**
+: A deployment of the Helm Charts where the cluster obtains an
+intermediate CA from a Primary Deployment and uses it to service
+Workload Identity requests.
+
+**Standalone Deployment**
+: A deployment of the Helm Charts where the cluster both manages the CA
+and services Workload Identity requests in the same cluster.
+
+**Tiered Deployment**
+: Use of the Helm Charts two or more times, such that one chart is
+configured as a Primary Deployment Type and the others are configured as
+Secondary Deployment Types.
+
+**Trust Domain**
+: The host field of a SPIFFE ID, naming a minimum footprint of a trust
+bundle's distribution.
diff --git a/project/overview.md b/project/overview.md
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--- a/project/overview.md
+++ b/project/overview.md
@@ -41,3 +41,11 @@ within the primary github repository.
 The project is currently in a pre-release status.  While the standalone
 deployment is close to release quality, the tiered deployment is not.
 
+## Project Navigation
+
+Below are links to project documentation useful for the management and
+maintenance of the spire/helm project.
+
+### Coordination
+
+- [glossary](glossary.md)