subtle line?
I nedd the expression that is said when you mean the difference between two things in terms of meaning is very little For example, the difference between may and might

Is it _ the line that separates them is so fine

there is a very subtle line between them
Please, let me know the idiom, i know there is one

Thanks

Question

subtle line?
I nedd the expression that is said when you  mean the difference between two things in terms of meaning  is very little  For example, the difference  between  may and might

Is it  _ the line that separates them is so fine

there is a very subtle line between them
Please, let me know the idiom, i know there is one

Thanks

Answer

There is a fine/thin line between something and something else.

Answer

"There's a fine line between X and Y."

My Australian colleague Ms Amphlett shall explain the details:

https://www.youtube.com/watch?v=rH8hcfhG1Jo