skin
The word 'peau' in French is the equivalent of the English word 'skin'. It is used to describe the outer covering of a human or animal body. It can also be used metaphorically, such as in the phrase 'avoir la peau dure' which means 'to have a thick skin' or 'to be resilient'.
The potato has rough skin.
This sentence is an example of observing and describing an object's physical attributes in French. Here, the texture of the potato's skin is being described.
He has changed his skin.
In French, the phrase 'changer de peau' is a metaphor, which means to change one's nature or to transform oneself. It does not carry a literal connotation of changing one's physical skin.
Her skin is very sensitive to the sun.
This sentence is commonly used to express sensitivity to environmental factors. In this case, we are talking about sun sensitivity, which is a common topic especially in health-oriented conversations.