coefficient of elasticity vs elastic modulus

coefficient of elasticity and elastic modulus both are nouns.

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

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

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

Other synonyms of coefficient of elasticity include modulus of elasticity.

coefficient of elasticity (noun)	elastic modulus (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