Both of those words are one letter removed from English words for a thing that is sour and a thing that is sweet, which feels like it's going to significantly bias the results on its own.
This comment nerd-sniped me and I still have not figured out what the english words in question might be.
Probably kiwi for the sour thing, though it's plenty sweet too. Not sure what the other word is. Maybe bouba as in the sweetened chunky tea?
Kiwi and Boba (tea)
My best guess (rot13, to avoid spoilers) is xvjv & obbol?
The second one had also crossed my mind just as a funny though, but I looked it up and apparently it is sweet. Though I was thinking oboof.
encryption broken by length analysis :-)
My first thought was that kiki would be spicy.
Very curious what people think about this.
sourness is a pointy quality. sweetness is more rounded and smooth.