[drc]

Card, as in the physical item itself, is defined differently by different people. Some people don't call something a baseball card simply because they don't think the fits the physical definition of a card. Sweet Caporal pins fit all the rules for being a baseball card except for one small detail-- it's a pin not a card.

For the benefit of those who don't know photography or French, the word carte in carte de visite (aka CDV) literally translates to card. And that's the original 1800s term, not a modern retroactive concoction.

And to reiterate what I said in an earlier post, card and trading card are not one and the same. A trading card has to be a card, but being a physical card does not in and of itself make something a trading card. And baseball card is short for baseball trading card.