I like analogies. They make it easier to express ideas and communicate concepts.

Recently someone was asking about the difference between an "images" vs "registry", and how they pertain to containers.

I came across this one amidst a google search (source unknown - sorry):

Imagine a container image as a pre-made pizza with all the ingredients (code, dependencies, configuration) on it.

The container registry is like a grocery store where you can find these pre-made pizzas (images) and either buy them (pull) or store your own homemade pizzas (push custom images) for later use.