Usage patterns
本物の〈物〉a genuine/real 〈物〉
This is a genuine diamond.
〈物〉が本物かどうか確かめるto check whether something is genuine
I had someone check whether the antique was genuine.
本物と偽物を見分けるto tell the genuine article apart from a fake
Even experts find it hard to distinguish the real thing from a fake.