full
The Italian word 'pieno' can be used to describe when something is full, without empty space or void. It could be a glass of water that is 'pieno', a room that is 'pieno' of people, or a day that is 'pieno' of appointments. Just like in English, 'pieno' is used to signify a state where nothing more can be added.
The glass is full of water.
This sentence is an example of using 'pieno' in a context of describing a capacity, indicating that the glass is filled up with water, leaving no room for more.
The store is full of people.
In this example, 'pieno' is used to indicate a large quantity of people, suggesting that the store is busy, crowded and there are a lot of people.
I am full after lunch.
Here 'pieno' is used to express the feeling of satiety, meaning that no more food is desired after lunch because the person feels fully satisfied.