Tell which is which Meaning in English
expression
Definition
To identify one thing from another when they are similar; to be able to see or explain the differences between two or more things.
Usage & Nuances
Informal and mostly used when two or more objects, people, or ideas look or seem very similar. Often used with 'can't' as in 'I can't tell which is which.' Not usually used for clear or obvious differences.
Example Sentences
These twins look the same, so I can't tell which is which.
basic
Can you tell which is which after painting the doors?
basic
The two bottles are so similar that it's hard to tell which is which.
basic
When my cats hide under the bed, I can't tell which is which without their collars.
natural
Those two apps look identical—I honestly can't tell which is which on my phone.
natural
After mixing up the files, I had to check the dates to tell which is which.
natural