tell chalk from cheese

To be able to tell two people or things apart, especially by recognizing their differences. Of course I know which twin is which—I can tell chalk from cheese, after all! Leah has a beauty mark under her left eye, and Deena doesn't.

See also: chalk, cheese, tell

See also:

not tell chalk from cheese
tell the truth and shame the devil
tell (one) about (someone or something)
tell about
tell
I can tell you
hear tell of (something)
kiss and tell
kiss and tell, to
kiss-and-tell

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