What is the Difference Between Similar But Different Things, Terms, and Objects

What is the Difference between Bittersweet, Semisweet and Unsweetened Chocolate

Chocolate is one of those things which are eaten all over the world and it’s equally loved by adults and children. Different people love different verities of chocolate and a large number of companies are manufacturing chocolates. Some people like chocolate with nuts some other prefer it with ceramal and few other love it with wafers.