cannot be separated

[Ungifted]

Both really cannot be separated from each other. Both really cannot be compared with each other. Both cannot really be separated from each other. Both cannot really be compared with each other.

Please proofread my sentences.

 

[GoesStation]

I'm guessing you'd like comments on the correctness of these sentences.

We use constructions with neither in negative sentences. Write Neither of them can be separated from the other, etc. You can write "neither one" in place of just "neither".

 

[Ungifted]

If I got you right, all my sentences above are wrong.
Tell me if my sentences are correct now.
Negative sentences:
Neither of them can be compared with each other.
Neither of them can be separated from the other.
Positive sentences
Both can be compared with each other.
Both can be separated from the other.

 

[GoesStation]

If I got you right, all my sentences above are wrong. [That's what I meant to write, yes.]
Please tell me if my sentences are correct now.
Negative sentences:
Neither of them can be compared with each other. :cross:
Neither of them can be separated from the other. :tick:
Positive sentences
Both can be compared with each other. :cross:
Both can be separated from the other. [Unnatural.]

You could write They can both be compared with each other, but it's very awkward. Why not just say They can be compared with each other?

The same problem applies to the final sentence, only more so. Just write They can be separated from each other.

 

[Raymott]

I'd like to expand on GS's statement that these sentences are awkward.

I don't like constructions like "Both can be compared with each other". It seems to suggest that an alternative situation might be that only one of them can be compared with each other, which is nonsense.
"Both of them are the same." I admit to saying, "They're both the same" at times. But again, only one of them cannot be the same. The same occurs with 'neither'. "Neither of them is the same as the other" is also redundant for "They are not the same".