Here's a breakdown:
* Viscosity is a measure of a fluid's resistance to flow.
* High viscosity means the fluid is thick and flows slowly (like honey, syrup, or molasses).
* Low viscosity means the fluid is thin and flows easily (like water, alcohol, or air).
Other examples:
* Motor oil has a higher viscosity than gasoline, which is why it flows slower and provides better lubrication in an engine.
* Ketchup has a higher viscosity than tomato juice, which is why it's harder to pour out of the bottle.
* Lava has a very high viscosity, which is why it flows slowly and can build up into large volcanic cones.
In short, viscosity is a measure of how "thick" a fluid is.