This is the 8286th most frequent French word.
westmount
"Westmount" is not a French word; it is the name of a Montreal suburb in Quebec, Canada.
The word 'Westmount' here is used as a proper noun referring to a geographical location.
Je vis à Westmount depuis dix ans.
I have lived in Westmount for ten years.
In this sentence, 'Westmount' is part of the name of an institution, indicating reliance on the location it belongs to.
La bibliothèque de Westmount est bien équipée.
The Westmount library is well-equipped.
'Westmount' is used to specify the area where certain activities took place.