It's weird that Celsius, Kelvin and Fahrenheit were so far apart.
Input as guesses:
digit
number
car
compare
Once you got the solution, please explain to me how it works again.
Your explanation is likely to be accurate in the case of celsius, but it seemingly doesn't fit on this other game/answer.
I don't want to spoil the answer to that game, but to me it is hard to believe that both "car" and "compare" are nearer than "digit" or "number" to the answer if it is based on number of occurences in context.