Paisley and plaid are two distinct patterns that have been used in fashion for centuries. Paisley is a droplet-shaped pattern that originated in India and was popularized in Europe in the 18th century. Plaid, on the other hand, is a crisscross pattern of different colored stripes that originated in Scotland and has been used in clothing since the 16th century. Both patterns are still popular today and can be seen in a variety of clothing items.