This is the 786th most frequent German word.
mario
The German word "Mario" is a proper noun, typically a male given name, equivalent to "Mario" in English.
In this sentence, 'Mario' is used as a proper noun, serving as the subject of the sentence and denoting an individual's name.
Mario ist ein talentierter Musiker.
Mario is a talented musician.
In this instance, 'Mario' is again a proper noun, mentioned in the genitive case to show possession of the 'Erfindung' and being apposited with a description.
Die Erfindung von Mario, dem Genies, revolutionierte die Technologie.
The invention by Mario, the genius, revolutionized technology.
Here, 'Mario' continues as a proper noun, subject of the action described by the verb 'hat gegeben', detailing an event involving the individual.