This is the 355th most frequent Italian word.
marco
The Italian word "marco" is a masculine proper noun, equivalent to "Mark" in English.
Here, 'Marco' is used as a proper noun to refer to a specific individual, a person's name.
Marco è il mio migliore amico.
Marco is my best friend.
Here, 'marco' refers to a historical currency, used in a financial or historical context.
Il marco tedesco era una valuta molto stabile.
The German mark was a very stable currency.
In this sentence, 'marco' is a noun referring to a marker or a symbol used to denote something, indicating its instrumental usage.