この二つの物質は同質である。
These two substances are of the same nature.
同質な人ばかりの組織では、新しい発想が生まれにくい。
New ideas are hard to come by in an organization made up only of similar people.
両社の製品は価格こそ違うが、品質はほぼ同質だ。
The two companies' products differ in price, but their quality is nearly identical.