be chalk and cheese

be chalk and cheese

To be very different from one another. Good luck getting those two to talk to each other—they're like chalk and cheese. My daughters are chalk and cheese these days—one loves baseball and the other loves ballet.
See also: and, chalk, cheese
References in periodicals archive ?
According to Border's article in the Daily Telegraph, he opined that the standard of bowling Warner will face in Africa and the conditions he would experience will be chalk and cheese to the challenges that await him in England.