Pod: A pod is the most basic unit of Kubernetes. The “one-container-per-Pod” model is the most common use case in real world settings. Typically this means a single container runs on the pod. An example of such a container could be docker container built off an image.
Sidecar: A sidecar is an additional container that runs along side the main container in the pod. This allows us to practice seperation of concerns by not worrying about the additional sidecar pod. A typical example could be a logging container that can be added to the main container as a sidecar
