In mathematics, a relation is used to describe certain properties of things.

No one has been to the center of the earth, yet there are theories describing its composition and properties.

The difference being that, 'substance' may be used to describe properties of several other concepts than mass.

The table below describes properties of several different thermocouple types.

She described various physiological properties that could influence a decline in range of motion.

Colebatch et al. (1994) described the basic properties of the response.

The first fundamental form completely describes the metric properties of a surface.

Single band models are generally considered to be sufficient to describe the electronic properties.

Sixth, there is the chemical literature that describes the properties of various substances.

Libavius described the properties of the sample, which may have been zinc.