This is the 3412th most frequent French word.
boniface
An innkeeper or hotel owner.
Here, 'Boniface' is used as a proper noun referring to a specific person, typically a name.
Boniface s'intéresse à l'histoire médiévale.
Boniface is interested in medieval history.
In this context, 'boniface' is used metaphorically to refer to someone's behavior of showing off or feigning knowledge.
Il a joué à la boniface en prétendant tout savoir.
He acted like a boniface by pretending to know everything.
Here, 'Boniface' is the name of an establishment, showing it can be a proper noun for entities as well.