粘性

1. Origins, structure, and basic meaning

• Structure: 粘性 is read as ねんせい and is viscosity, the degree to which a fluid resists flowing or deformation.
• Basic usage: Use 液体の粘性が高くなる for a liquid's viscosity increasing and 塗料の粘性を測る for measuring the viscosity of paint.

2. Common pitfalls and similar expressions

• Distinction between 粘性 and 粘着性
  • The headword describes a fluid's internal resistance to flow, while the comparison term describes the tendency of a material to adhere to another surface.