Facets
To summarize, the concept is that subjects can be broken down
into aspects (i.e. facets) with the primary ones time, place,
action, material, and personality - you can think of this last
category as natural groupings of the type that standardized
subdivisions can be applied to such as materials, animals,
corporate entitities, diseases, body parts, etc.
I'm not sure how to use all of these