This is the 7005th most frequent French word.
marco
"Marco" is not a standard French word; it is primarily a proper name.
Here, 'Marco' is used as a proper noun, serving as the name of a person within a simple declarative sentence.
Marco est arrivé en avance aujourd'hui.
Marco arrived early today.
In this sentence, 'Marco' again functions as a proper noun, and the sentence discusses an event involving this individual.
Nous avons célébré l'anniversaire de Marco hier soir.
We celebrated Marco's birthday last night.
Here, 'Marco' is part of a title referring to the historic figure Marco Polo and is used in a nominative context within the title of a cultural reference.