elastic modulus vs coefficient of elasticity

elastic modulus and coefficient of elasticity both are nouns.

Word	Noun	Adjective	Verb	Adverb
elastic modulus	Yes	No	No	No
coefficient of elasticity	Yes	No	No	No

As nouns, elastic modulus and coefficient of elasticity are synonyms defined as:

elastic modulus and coefficient of elasticity: (physics) the ratio of the applied stress to the change in shape of an elastic body

Other synonyms of elastic modulus include modulus of elasticity.

elastic modulus (noun)	coefficient of elasticity (noun)
(physics) the ratio of the applied stress to the change in shape of an elastic body	(physics) the ratio of the applied stress to the change in shape of an elastic body