At any rate, your list is missing the term "gallery", which refers to a sequence of chambers connected by walls.
]]>However, if you have a specific concept that you've been trying to wrap your head around for some reason, asking for metaphors or intuition about it can make for an awesome question. Just make sure to do some background work and make clear what you already understand and what you're hoping to get out of an answer. For example, "what is the meaning of depth of a ring?" looks almost like you're asking for the definition. Instead of asking that, you'd read the wikipedia page and explain why it doesn't answer your question. Something like this would be an improvement: "I'm happy with dimension, and in good (Cohen-Macaulay) cases, depth agrees with dimension. In general, is there a good geometric interpretation of depth? Is there an intuitive geometric criterion to test if a ring is Cohen-Macaulay?"
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