* Composites refers to something made up of different parts or elements.
* Synthetic also implies something created artificially by combining different components.
Let's look at the other words:
* Shabby: Worn and in poor condition.
* Different: Not the same.
* Pseudo: False or fake.
* Symbolic: Representing something else.
* Exact: Precise and accurate.
While some of these words might have a slight connection to "composites" or "synthetic" (like "different" in the sense that composites are made of different parts), they don't have the same core meaning of being made up of multiple elements or being artificially created.