Interesting. That seems to explain why we call these 'paranoot' in Dutch.
We call it nuts from one of the biggest, country-in-a-state administrative regions, the second biggest I guess in amazon rainforest, after the absolutely humongous state called Amazonas (AM). Sometimes here it's also the one implied if you just say "nut" (castanha), though cashew nuts are also common and plentiful but come out more from northeastern regions, the ones with a beautiful coast and equatorial climate, than the northern directly associated with humid continental Amazon geography.
Here we call it Pará Nuts, or castanha do pará. Pará is the most famous state were the nuts grow.
In German, they're "Paranüsse", where "nüsse" = nuts.
Just to join the choir, in Swedish they're para nuts as well.