Usually in the standard measurement, one spoon = 15ml=3 teaspoons, while in Australia, the calculation system is quite special, one spoon =20ml=4 teaspoons, and the weight of one teaspoon is less than that of one teaspoon. Generally speaking, a tea spoon refers to a small iron spoon, which is relatively flat and can only hold a little liquid. The soup spoon is a ceramic spoon, which is deep and can hold more liquid.
Precautions for spoons
The way to hold the spoon is: hold the spoon in your right hand, with the index finger just pressed on the groove at the upper end of the handle and the thumb and middle finger supported below. This is better, more civilized and more stable. (Of course, the thumb can also be pressed horizontally on the upper end of the handle, and the index finger and middle finger can be supported below. This makes it a bit rude and informal.
Leaky spoon: the spoon should not leave the front of the bowl or plate, and the soup should not drip out of the bowl or plate.