I have attested two words in English that come from two Latin words. These are "night" and "light". They derive from the words "nox" and "lux" respectively; both Latin — in the case of the word "nox", though, this one might also derive from Greek "nyx".
Nevertheless, the question is: is this a normal transition and happens often, or has it happened because of the word wasn't a direct loanword from Latin, but it came through other languages?
If so, do we have any other word in English that ends with -ght and its Latin counterpart ends with -x?