Trading cards are the basis of trading card games.
Cards are first created based on a specific template, which is unique to the TCG itself. TCG owners may create their own, adopt from someone who has made card templates specifically for adoption, or outsource the template-creating talent to someone who can create one, typically upon request.
Card worth is the overall worth of a card collection. It is usually used when there is a mix of special and regular cards with worths of 1 or 2, respectively.
Card count is the total count of cards in a collection, despite their worth.