Using な and の interchangeably?


Using them as descriptors, can they be interchanged?

E.g. 親切な人 vs 親切の人

Is の only acceptable if referring to a specific new person from a certain
place that has been established earlier in the conversation?




Both 新しいな車 and 新しいの車 are ungrammatical. 新しい is an い-adjective, and there is no
interceding particle when い adjectives precede a noun.

な adjectives (e.g., 静か、変) require な when they precede a noun. 静かな部屋, **not**
静か部屋.

焔 is not an adjective; it's a noun. The particle の is used between nouns, even
when a noun is being used in a descriptive sense. There's some overlap between
な adjectives and nouns in Japanese, but in this case, 焔な扉 would definitely be
incorrect. You can get a hint of how this sounds wrong by looking at how you
translated the phrase: "door of flames". "Flames" is clearly a noun in this
translation, as it is in the original. "Flames door" sounds odd to me in a
similar way to 焔な扉.

You can definitely find song titles with な adjectives in them; I just searched
my local karaoke box for songs with きれいな in the title and got plenty of
results, such as Pizzicato Five's 君みたいにきれいな女の子.

[Here's a lot more on Japanese adjectives from Tae Kim's
guide.](http://www.guidetojapanese.org/learn/grammar/adjectives)

