Do you agree with me? - Please share

[محسن لبيب حنين]

1
Would you agree with me if I said that the following sentence has something wrong

Here is the sentence
It seems that a king's life is quite hard, but a pretend king's life is even harder
2
I think "pretend" can't be used as a noun, can it? - And it isn't even followed by of, for example
3
Can "pretend" be used as an adjective? - I looked up many sources and all I got was that it is only a verb
4
pretended is the adjective
5
This sentence is on page 35, Chapter 4 in the last paragraph
6
There is another sentence on page 41 with the same word. This means that it is NOT wrong . And if it isn't wrong, then what's the explanation
Here is the second sentence
I spoke to him in English with a pretend foreign accent