A facet is a discrete piece of knowledge you can use to classify something. The more facets something has, the more ways it can be organised.
Using the record store as an example, the following facets are available for each record:
- Record Name
- Artist Name
- Record Label
- Length
- Release Date
- Price
How you choose to classify and organise things reflects your intent, but it can also reflect your worldview, culture, experience, or privilege.