weight
In French, 'poids' is used to express the weight of an object or a person. It can be used in a variety of contexts, such as 'Il a pris du poids' (He has gained weight), or 'Quel est le poids de ce colis?' (What is the weight of this package?).
I have recently lost weight.
This phrase is an example of how the word 'poids' is used in French. It means 'weight' in English. The phrase 'J'ai perdu du poids récemment' is a statement about having recently lost weight.
Body weight varies from person to person.
In this sentence, 'poids' is used in a compound noun 'poids corporel', which means 'body weight'. It implies that everyone's body weight is different.
The weight of this bag is too heavy.
In this instance, 'poids' is used to express the heaviness of an object, in this case, a bag. The adjective 'lourd' is used after the verb 'est' to express the idea that the bag is 'too heavy'.