The Coppa Italia is a trophy. The participating teams are Serie A and Serie B clubs, and the knockout stage will be held according to certain lottery procedures, presided over by the Italian Football Association, and finally won the championship.
The two of them have one thing: they are both Italian competitions.
The difference is: different management departments; The ranks of the participating teams are different; The competition system is different;
I can only say so clearly, I hope you can be satisfied.