pillow
In Italian, 'cuscino' refers to what English speakers call a 'pillow'. It's a cushioning item used primarily for sleeping on or supporting the body. It is commonly placed on beds, couches or chairs. For example, 'Mio cuscino è molto comodo' means 'My pillow is very comfortable'.
The pillow on the couch is very comfortable.
This sentence is talking about the comfort level of a pillow that is located on a couch.
It would be nice to have a bigger pillow.
In this example, the speaker is expressing a desire for a larger pillow.
I bought a new pillow for my bed.
This sentence is indicating that the speaker has purchased a new pillow specifically for their bed.