[Vitaly_C]

I've heard piña in SoCal, but once visited Costa Rica and heard ananas. Disclaimer: I don't speak Spanish.

[Vitaly_C]

I also heard in Costa Rica bananas referred to as patacones instead of platano, so I'm guessing there's a lot of regional-specific vocab at play here...

[cassianoleal]

As far as I can tell, patacon (as well as platano) is plaintain - not banana.