This is the 4594th most frequent French word.
montréalais
Relating to Montreal or its inhabitants; a person from Montreal.
Here, 'Montréalais' is used as a noun to refer to the inhabitants of Montreal.
Les Montréalais sont connus pour leur hospitalité.
Montrealers are known for their hospitality.
In this context, 'montréalais' is an adjective describing the culture as pertaining to Montreal.
La culture montréalaise est riche et diversifiée.
The Montreal culture is rich and diverse.
Here, 'Montréalais' is again used as a noun to signify a person from Montreal.