thanks I didn't know that, I typed yen into XE.com's input and it suggested 3 currencies, Japanese first, it was a bit dark and didn't have my glasses so I didn't see that Chinese was Chinese Yuan, I had a minor memory that China also used "Yen" as name of their currency, from some time in high school I suppose, and so I took it as being that.

One suggestion was also Yemen so probably the input has some Levenshtein distance awareness to it