Each concept here is mapped to its prerequisites — the ideas you'd need first to understand it — all the way down to four foundations: Space, Time, Energy, Pattern. Click any prerequisite to drill down, or scroll for the chain graph.
A button is a small, usually round or oval, fastening device that takes a specific shape, allowing it to fit into a corresponding hole or shank, which is a result of the arrangement of matter in space.
External reference — all senses of the word “button” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.
Trace. Question. Emerge.