The difference between teaspoons and coffee spoons is size. Coffee spoons, aka demi-tasse spoons, are teesy little things that go with teensy little coffee cups--the size people used to drink expresso out of before the days of Starbucks and double grand lattes.

Teaspoons don't grow up to be coathangers. Immature coathangers are called paper clips, and both life stages are inordinately fond of tangling.