In Scrivener one can use these kind of categories (if one could call it like that), if I see it right:
Label
Status
Keywords
meta tags
Custom Meta-Data
Are there still more?
Are those categories the same like keywords, respectively do they all use keywords, so is “meta data” the same like a “keyword” or a “Custom Meta-Data” and so on? Or: what is the difference between meta tag and keyword? And the difference between Custom Meta-Data and meta tag?
Under which circumstances one should use which kind of those groups, categories (label or status or meta tag and so on)? What exactly are the differences?