It is quite astonishing how changing a single letter in a word can entirely change the meaning of that word. 

The words ‘Carat’ and ‘Karat’ tend to differ by more than just one letter. Some people contemplate that these two homonyms are nothing but two different ways of spelling the same thing. But it is not. If you are thinking about whether ‘carat’ is correct, or ‘karat’ is correct, then let us tell you, they don’t even refer to the same measurement or unit! There is a huge difference between the two which goes beyond just the scope of spelling. In order to understand ‘carat’ as well as ‘karat’, we must first know what are the applications of each word, and the relationship they have in their respective domain.