Synthetic substances:
Synthetic fibers e.g. are made from organic synthetic high-molecular compounds and are made synthetically from raw materials such as petroleum oil or petrochemicals.
Until here the answer is: petroleum oil
At home, we can find synthetic fibers, ceramics, plastics, etc
We can find synthetic fibers (polyester, Rayon, Spandex, etc) in caps, raincoats, and ropes.
Plastic can be found in bottles, cups, etc.
