And what please? Are you asking about dinner spoon vs a desert spoon?
A dessert spoon would be the largest and placed at the top of your plate with the bowl end of the spoon facing to the left and the dessert fork placed above it facing to the right.
The dinner spoon would be to the side of the plate.
If you let me know how many courses and what type of servings you will be offering and whether it's a luncheon or dinner, I'd be pleased to provide you with a complete diagram of a table setting for formal environments, based on British style.
If you prefer resolutely american style I can offer you a Tiffany & Co outline. Or if less ambitious there's always the Arkansas setting which consists of a low trough and a shovel!
The size and position on the table setting.
Your salad generally contains things less dense in texture, thus more easily speared. It also helps to tell the difference of what fork is for what course.
Obviously, as desert spoons are used for eating and serving spoons are used for serving food.
There's not much difference. It depends on the preference of the person eating the soup whether they use a spoon or drink it from a mug.
A person would want to use the dessert spoon when eating sherbet between courses. There are several spoons to use at a formal dinner such as salad and soup spoons.
It is used for your main entree and sides, like the small plate is the appetizer plate, the bowl is soup or sometimes salad, there is a salad fork and a dinner fork, a soup apron and a tea spoon
Consomme soup should not be eaten with a dessert spoon, but with a boullion spoon, which is the round bowled spoon we now commonly called a soup spoon. Soup was eaten, and still is in silver service, with soup spoon which is very similar to a table spoon and about the size of what we now call a table spoon.
Soup is a starter
Put the soup bowl on a plate and then put the spoon on top of the right side of the plate. That's simple.
To eat soup, dip the spoon into the soup, then remove it by going away from your body, not toward it. Sip the soup off the side of the spoon, instead of placing the whole spoon in your mouth.
A cold spoon will extract heat from the soup, a spoon that is warmer than the soup will transfer heat to it.
Metal is a conductor. The spoon heated up from the soup and when the cook touched the spoon, he got burned because the spoon was hot from the soup.
The spoon would probably be made of medal.
With a spoon and bread.