な-adjectives + N and い-adjectives + N

Adjectives are placed in front of the noun.

な-adjectives keep な when they modify a noun.

しずかなこうえん きれいなはな

い-adjectives retain their original plain form.

かわいいコアラ  こわいえいが

Noun takes の to modify another noun.

にほんのおかし　がっこうのせんせい