This is the 8263rd most frequent French word.
walter
"Walter" is not a French word; it is typically a name.
In this sentence, 'Walter' is used as a proper noun to denote a person's given name.
Walter est un prénom commun dans plusieurs pays.
Walter is a common first name in many countries.
Here, 'Walter' identifies the name of a dog, again serving as a proper noun.
Le chien de ma voisine s'appelle Walter.
My neighbor's dog is named Walter.
Here, 'Walter' is used as a name of a person the speaker communicates with daily.