hand
The French word 'main' is used similarly to how we use 'hand' in English. It represents the part of the body at the end of the arm. It is mainly used in the context of holding things, touching, moving, etc., but there also exist expressions and phrases in French using 'main' like in English, for instance 'donner un coup de main' which literally translated to 'give a hand hit', but means 'to give a helping hand'.
Your hand is warm
This phrase refers to someone making a physical observation about the warm temperature of another person's hand.
He writes with his left hand
This sentence describes someone writing with their left hand, suggesting they could be left-handed.
He holds the book in his hand
This phrase refers to a physical act of a person holding a book in his hand.
She gave me an apple with her hand
This sentence is about a person handing over an apple using her hand.
Hand in hand, they left
This phrase provides a visual description of two people leaving a place while holding hands.
My hand hurts
This sentence describes a person expressing physical pain in their hand.
She has a beautiful hand
This sentence expresses someone's aesthetic admiration of a woman's hand.
The key is in my hand
This phrase describes a person holding a key in their hand.
He has a green thumb
This idiomatic phrase refers to someone's natural skill or talent in gardening and growing plants.
I cut my hand while cooking
This phrase describes an accident that occurred while cooking where the person cut their hand.