"The child has a new cap."
Translation:L'enfant a une nouvelle casquette.
"New" has two translations: one objective and one subjective.
L'enfant a une casquette neuve: objective, after the noun, the cap is brand new.
L'enfant a une nouvelle casquette: subjective, before the noun, the cap is new to him, and it may have been worn before, by the child or someone else.