cheek
The Italian word 'guancia' is used to refer to the cheek, which is the fleshy part of the face below the eye. It is used in contexts such as 'toccare la guancia' (to touch the cheek) or 'arrossire di guancia' (to blush).
Your mother has a very soft cheek.
This phrase talks about the texture of a person's cheek, emphasizing the smoothness and softness by using the adjective 'morbida' which translates as 'soft'.
He gave me a kiss on the cheek.
This sentence expresses the action of someone giving a kiss specifically 'on the cheek'. Here, 'guancia' denotes the location where the action of kissing has taken place.
The child's cheek was rosy from the cold.
In this phrase, 'guancia' is used to describe part of the physical reaction (getting rosy cheeks) a child has to cold weather.