A Full Protein is made up of a combination of essential amino acids, nine to be exact.
Protein is found in many things besides for animal products, for example seeds, beans and grains.
However, all animal products are full proteins on there own (containing all esential amino acids)- the proper combination of things like rice and beans creates a full protein too.
Though, it is not necessary to combine specific protein foods at one sitting. Throughout the day, as you are consuming plant based proteins, your body will combine proteins from all sources to get all the "complete proteins" it needs.