A collectible refers to an item that is worth far more than it was originally sold for because of its rarity and/or popularity. The price for a particular collectible usually depends on how many of the same item are available as well as its overall condition.
The term collectible and antique interchangeably. But it's important to note that there is a distinct difference between the two. While all antiques may be collectibles, not all collectibles may not be antiques because collectibles don't necessarily have to be old to be worth money.