Which term describes the thickness or stickiness of a liquid?

Viscosity is the term that specifically refers to the thickness or stickiness of a liquid. It describes how resistant a fluid is to flow; in simpler terms, it determines how "thick" the liquid feels and how easily it pours. For example, honey has a high viscosity, making it thick and sticky, whereas water has a low viscosity, allowing it to flow freely.

Other terms like consistency may describe the texture of a food or how it behaves under certain conditions, but they do not specifically target the physical property of thickness related to liquids. Ductility refers to the ability of a material to deform under tensile stress, typically associated with solids rather than liquids, and fluidity describes the ease with which a fluid can flow, which is inversely related to viscosity. Hence, viscosity is the most precise term to describe the thickness or stickiness of a liquid.