compare apples and oranges

compare apples and oranges

to examine the similarities of things that are completely different Comparing the average wages of workers and managers is like trying to compare apples and oranges.
Usage notes: usually used to explain that two things cannot be compared
See also: and, apple, compare, orange
References in periodicals archive ?
You cannot compare apples and oranges, and we enjoyed Harry Potter much more than TLOTR.