What is the etymology of "ucchedaváda"?

Like the title: what is the etymology of “ucchedaváda”, but also, what do you think of “annihilationism” vs “nihilism” with regards to its English rendering?

I reckon it is closer to annihilationism than nihilism.

Terms to investigate are:

https://suttacentral.net/define/uccheda

https://suttacentral.net/define/ucchedana

It is interesting how the Pali term sounds similar to the Italian verb uccidere, which means nowadays to kill and comes from the Latin occido, which once meant perishing, ruin - I have no basis to assume these are etymologically related nevertheless!

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