noun which may take the genitive case particle 'no'
water-based; aqueous
Describes products, solutions, or substances that use water as the primary solvent or medium. Common in everyday contexts like paints, inks, and cosmetics.
このペンキは水性だから、水で洗い流せる。
This paint is water-based, so you can wash it off with water.
水性のインクを使っているので、服についても落ちやすい。
Because it uses water-based ink, it comes out easily even if it gets on your clothes.
noun which may take the genitive case particle 'no'
water-soluble
Specifically refers to substances that dissolve in water. Often used in scientific or technical descriptions, and cross-referenced with 水溶性.
See also: 水溶性
このビタミンは水性なので、水に溶かして飲める。
This vitamin is water-soluble, so you can dissolve it in water and drink it.