As with stamps, coins and banknotes, distinct terminology and jargon developed to describe various aspects of deltiology. Here are some common terms to get you up to speed:
Any card containing a representation of a town, city or scene. Cards with more than one picture are called "mulitviews".
Rackcards or Freecards:
Advertising giveaways common in cafes and hotel lobbies.
A card made to look like a painting with discernable brushstrokes.
Also called "continental".
Any card larger than the "standard" 6"x4". Early cards were a standard 3.5"x5.5".
A card with moving parts
Brown, hard-to-remove blemishes, usually mildew.
A card cut to a unique shape, like Santa or a car.
A fabric style treatment often used to disguise cheap paper