This is the 6642nd most frequent French word.
johny
"Johny" is not a standard French word. It may be a proper noun, such as a name.
In this sentence, 'Johny' is used as a proper noun representing someone's name, and its usage corresponds to indicating the individual who is the speaker's best friend.
Johny est mon meilleur ami.
Johny is my best friend.
Here, 'Johny' is again a proper noun, signifying the person the speaker regularly observes at the park.
Je vois Johny tous les jours au parc.
I see Johny every day at the park.
In this instance, 'Johny' identifies the subject of the sentence whose actions are described, demonstrating the sentence's focus on Johny's influence and activity.