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+# Glossary
+
+## Application
+
+A process tree launched inside a [container](#container).
+
+## Bundle
+
+A [directory structure](bundle.md) that is written ahead of time, distributed, and used to seed the runtime for creating [containers](#container) and launching [applications](#application).
+
+## Configuration
+
+A [file](config.md) in a [bundle](#bundle) which defines the intended [container](#container) and [application](#application).
+
+## Container
+
+An environment setup for the [application](#application) (namespaces, resource limits, mounts, …).
+
+## Runtime
+
+An implementation of this specification.
+It reads a [configuration file](#configuration) from a [bundle](#bundle), uses that information to create a [container](#container), and launches an [application](#application) inside the container.