comparing apples and oranges

Translations
сравнивать несравнимое
Trying to compare her new book to his classic novel is like comparing apples and oranges.
Пытаясь сравнить её новую книгу с его классическим романом, мы сравниваем несравнимое.
Definitions
Comparing two things that are fundamentally different and therefore cannot be fairly compared.
Words
apple

noun
яблоко
orange

noun
апельсин
compare

verb
сравнивать