tone
The French word 'ton' is used in a similar way to its English counterpart. It can refer to the quality of a sound, such as a musical tone or the tone of someone's voice. It can also be used metaphorically to describe the mood or atmosphere of a situation or conversation, as in 'the tone of the meeting was tense.'
Is this your book?
In this phrase 'ton' is used as the possessive pronoun meaning 'your'. 'Ton' is used before masculine singular nouns.
I don't understand your point of view.
In this phrase, 'ton point de vue' is translated as 'your point of view'. Therefore, 'ton' is used to signify something that belongs to the person you are speaking to.
What is your address?
In this phrase, 'ton adresse' is translated as 'your address'. So, 'ton' is used to ask about a specific piece of information that belongs to the person you're speaking to.