What is the difference between fontina and fontinella cheese?

one cheese was originated from Parmigiano and the other was originated Reggiano (both in italy)

Actually, I believe the above is answering a question about the difference between other cheeses. Fontina originates in Italy; fontinella is a newer cheese that was created and made in the U.S. Fontinella is a mild cheese great to eat on its own, with bread/crackers, etc..on a cheese plate. Fontina is superior for melting (makes a fonduta . . Italian fondue . . . yum).. I've not tried melting Fontinella, nor would I if Fontina is available at any market.