Yes, that is correct. The singular form of panini is panino in Italian.

"Sandwich" in English is panino in Italian.

iam not sure but i think panini is thinker than panino :)

The Panino come from italy and is a kind of bread (there are many kinds of panini bread), with inside what you want to put, for example cheese and salame, or prosciutto and salads, or mortadella, or wurstel or porchetta...there are thousand types of panini and it depend of the Region where you are in italy every region have own famous kind of panino. Panini is the plural word of panino.

Yes Panino come from italy and is a kind of bread (there are many kinds of panini bread), with inside what you want to put, for example cheese and salame, or prosciutto and salads, or mortadella, or wurstel or porchetta...there are thousand types of panini and it depend of the Region where you are in italy every region have own famous kind of panino. Panini is the plural word of panino.