Answer:

Vases are usually designed for holding cut flowers and can often be quite decorative. Lots of McCoy vases are in the shapes of flowers. The planters are designed to have small dish gardens in, or single plants. They, too, can be quite decorative often in the shape of animals, etc. Here are a typical McCoy vase and planter. The term "antique" used to apply to anything over 100 years old. Vintage can apply to items of a certain era. Anymore I believe they are often used interchangeably.