What is the difference between 특별한 and 특별함?
특별 is a noun meaning 'special; unique'
특별한 is the adjective form... Is this correct?

So what is the difference when using 특별한 and 특별함?

Thank you!

Question

What is the difference between 특별한 and 특별함?
특별 is a noun meaning 'special; unique'
특별한 is the adjective form... Is this correct?

So what is the difference when using 특별한 and 특별함?

Thank you!

Answer

특별한 is adjective. You're right.

And speaking of 특별, it is listed as a noun like 특별함 in dictionary.
특별함 is used itself as a noun meaning specialty or distinction.
Meanwhile, I have never seen people using 특별 alone as a noun.
It's rather used like adjective with noun and comes before noun.

Examples
특별구역, 특별만남, 특별활동...etc

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