The usage of "above"

[whitemoon]

"Above" can be used as a preposition and an adverb, I have learned. But some people use "above" as a noun. They write "All of the above are correct.", "The above explaination is good", etc. I suspect that it can be used as a noun.
Are they correct in English usage?

[Coffa]

Originally Posted by whitemoon

"Above" can be used as a preposition and an adverb, I have learned. But some people use "above" as a noun. They write "All of the above are correct.", "The above explaination is good", etc. I suspect that it can be used as a noun.
Are they correct in English usage?

Yes, they are correct. In your second sentence, 'above' is an adjective though.

[whitemoon]

Originally Posted by Coffa

Yes, they are correct. In your second sentence, 'above' is an adjective though.

Thank you very much,Coffa!