Series: A broad collection of similar cards that share gameplay mechanics or themes but have unique names. (e.g., Puppeteer Series with "Puppet Master" and "Grave Marionette")
Archetype: A group of cards sharing a common name. (e.g., Sinata Archetype with "Sinata Viola" and "Sinata Cello")
Independent: Cards that exist independently or have yet to be associated with a Series or Archetype.