Landscape design: a great analogy for the web
I often find myself describing the digital domain to people who don't live and breathe it like I do. It's an intangible thing, and many of the concepts are coded in jargon. It doesn't help that every technology tool set uses it's own specific language, sometimes using the same words for very different things, or different words for the same things. What's a page? A widget? A layout? A template? A module, plugin or extension? It varies. The answer "depends".
Analogies can be a helpful communication tool to get the message across, and get everyone thinking in parallel.