sofa
The French word for 'sofa' is 'canapé'. It is used exactly how you would use 'sofa' in English. For example, 'Je suis sur le canapé' means 'I am on the sofa'. Remember, the definite article 'le' in 'le canapé' might change depending on the gender and plurality.
I like the sofa in your living room.
This phrase expresses an appreciation for the sofa (canapé) located in the living room of the person the speaker is talking to.
My sofa is very comfortable.
This phrase uses the term canapé to describe the speaker's own sofa. The speaker is indicating that their sofa has a high level of comfort.
He is sitting on the sofa.
In this case, the term canapé is used in the context of someone else's actions. It is used to state that a person, he, is currently positioned on the sofa.