Probably nothing, since the composites are generally molded.

Technically, composite means more that one material is involved, such as carbon fiber strengthening of a fiberglass part.

However, in recent times, this has become watered down with the term composite sometimes being used to refer to a fiberglass part since it is composed of two parts (the resing and the fiber matt).

Molded refers to the manufacturing process. In this case it would be different than, say, a foam wing model with vacuum bagged fiberglass skin. Recent usage of "molded" tends to imply a hollow structure as opposed to the vacuum bagged example, but may or may not be a composite.