The word "venerdì" means "Friday" in English. The number "17" is simply the number seventeen. The word "sfortuna" means "bad luck" or "misfortune." The word "perché" means "why." Putting these together, the words relate to the Italian superstition surrounding "venerdì 17" (Friday the 17th), which is considered an unlucky day. The superstition stems from several historical and linguistic reasons: the Roman numeral XVII can be rearranged to "VIXI," meaning "I have lived," a euphemism for death; in the Bible, the Flood began on the 17th day of the second month; Jesus died on a Friday; and the date is linked to negative cultural superstitions in Italy. Thus, "venerdì 17" is considered a day of "sfortuna" (bad luck) in Italy, and "perché" (why) refers to asking the reason for this belief.

So, translating the terms with context:

• [venerdì](javascript:void(0)) = Friday
• 17 = 17
• [sfortuna](javascript:void(0)) = bad luck
• [perché](javascript:void(0)) = why

These words relate to the Italian cultural superstition about Friday the 17th being an unlucky day.