Density and Opacity

Density noun - The degree to which a fluid can resist flowing.

Opacity and density are semantically related In some cases you can use "Opacity" instead a noun "Density".

Nearby Words: dense, densely, densimeter

Opacity noun - The quality or state of having a veiled or uncertain meaning.

Density and opacity are semantically related in opaqueness topic. You can use "Density" instead a noun "Opacity", if it concerns topics such as lack of clarity.