Coefficient and Expansivity

Coefficient noun - A constant number that serves as a measure of some property or characteristic.

Expansivity and coefficient are semantically related. In some cases you can replace term "Expansivity" with "Coefficient", this nouns are similar.

Expansivity noun - The fractional change in length or area or volume per unit change in temperature at a given constant pressure.

Coefficient and expansivity are semantically related. You can use "Coefficient" instead a noun "Expansivity".