This is the 744th most frequent French word.
liège
Cork.
In this sentence, 'liège' refers to the material cork, commonly used for sealing bottles.
Le vin était scellé avec un bouchon de liège.
The wine was sealed with a cork.
Here, 'liège' describes the cork material used in manufacturing various objects.
J'ai visité une usine qui produit des objets en liège.
I visited a factory that produces items made of cork.
In this instance, 'Liège' is a proper noun, denoting the name of the Belgian city.